@article{PakonenJSS2024,
   title = {Evaluation of visual property specification languages based on practical model-checking experience},
   journal = {Journal of Systems and Software},
   volume = {216},
   pages = {112153},
   year = {2024},
   doi = {10.1016/j.jss.2024.112153},
   url = {},
   author = {Antti Pakonen and Igor Buzhinsky and Valeriy Vyatkin}
}

@article{OvsiannikovaOJIES2024,
  title = {Formal verification of non-functional requirements of overall instrumentation and control architectures},
  journal = {IEEE Open Journal of the Industrial Electronics Society},
  author = {Polina Ovsiannikova and Anti Pakone and Dmitry Muromsky and Maksim Kobzev and Viktor Dubinin and Valeriy Vyatkin},
  year={2024},
  volume={5},
  number={},
  pages={616-631},
  doi={10.1109/OJIES.2024.3413568}
}

@article{OvsiannikovaACCESS2021,
  author={Ovsiannikova, Polina and Buzhinsky, Igor and Pakonen, Antti and Vyatkin, Valeriy},
  journal={IEEE Access}, 
  title={Oeritte: User-Friendly Counterexample Explanation for Model Checking}, 
  year={2021},
  volume={9},
  number={},
  pages={61383-61397},
  doi={10.1109/ACCESS.2021.3073459}
}

@article{PakonenRESS2021, 
   title = {Model checking reveals design issues leading to spurious actuation of nuclear instrumentation and control systems}, 
   journal = {Reliability Engineering \& System Safety}, 
   volume = {205}, 
   pages = {107237}, 
   year = {2021}, 
   issn = {0951-8320}, 
   doi = {https://doi.org/10.1016/j.ress.2020.107237}, 
   url = {https://www.sciencedirect.com/science/article/pii/S0951832020307377}, 
   author = {Antti Pakonen and Igor Buzhinsky and Kim Bj\"{o}rkman}
}

@article{BuzhinskyAccess2020,  
   author = {I. {Buzhinsky} and A. {Pakonen}},  
   journal = {IEEE Access},   
   title = {Symmetry Breaking in Model Checking of Fault-Tolerant Nuclear Instrumentation and Control Systems},   
   year = {2020},  
   volume = {8},  
   number = {}, 
   pages = {197684-197694},  
   doi= {10.1109/ACCESS.2020.3034799}
}

@article{BuzhinskyAccess2019, 
   author = {I. {Buzhinsky} and A. {Pakonen}},  
   journal = {IEEE Access},   
   title = {Model-Checking Detailed Fault-Tolerant Nuclear Power Plant Safety Functions},   
   year = {2019},  
   volume = {7},  
   number = {},  
   pages = {162139-162156},  
   doi = {10.1109/ACCESS.2019.2951938}
}

@InProceedings{PakonenNPIC2025,
  author = {A. {Pakonen} and L. {Tuominen} and M. {Viitasalo} and P. {Nuutinen}},
  booktitle = {14th Nuclear Plant Instrumentation, Control and Human Machine Interface Technologies (NPIC \& HMIT)},
  title = {Formal Safety Assessment Methods in {Olkiluoto} 1\&2 {NPP} {I\&C} Renewal Project {DIMA}},
  year = {2025},
  volume = {},
  number = {},
  pages = {},
  doi = {10.13182/NPICHMIT25-46672},
  url = {}
}

@InProceedings{PakonenNPIC2025,
  author = {J. {Berger} and A. {King} and A. {Pakonen}},
  booktitle = {14th Nuclear Plant Instrumentation, Control and Human Machine Interface Technologies (NPIC \& HMIT)},
  title = {Integrating {STPA} to {NPP} Systems Engineering Processes},
  year = {2025},
  volume = {},
  number = {},
  pages = {},
  doi = {10.13182/NPICHMIT25-46634},
  url = {}
}

@InProceedings{PakonenETFA2024,
  author = {A. {Pakonen}},
  booktitle = {29th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2024)},
  title = {Compositional verification of nuclear safety {I\&C} systems with {OCRA}},
  year = {2024},
  volume = {},
  number = {},
  pages = {},
  doi = {10.1109/ETFA61755.2024.10711009},
  url = {}
}

@InProceedings{BergerETFA2024,
  author = {J. {Berger} and R. {Tiusanen} and H. {Kothalawala} and A. {Pakonen}},
  booktitle = {29th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2024)},
  title = {Applying priority-informed {STPA} to a nuclear {I\&C} system},
  year = {2024},
  volume = {},
  number = {},
  pages = {},
  doi = {10.1109/ETFA61755.2024.10710653},
  url = {}
}

@InProceedings{OvsiannikovaIECON2023,
  author = {P. {Ovsiannikova} and A. {Pakonen} and V. {Vyatkin}},
  booktitle = {49th Annual Conference of the IEEE Industrial Electronics Society (IECON 2023)},
  title = {Automatic generation of repair suggestions for control logic of I\&C systems},
  year = {2023},
  volume = {},
  number = {},
  pages = {},
  doi = {10.1109/IECON51785.2023.10311970},
  url = {},
  note = {}
}

@InProceedings{PakonenETFA2023,
  author = {A. {Pakonen}},
  booktitle = {28th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2023)},
  title = {Obfuscation of function block diagrams},
  year = {2023},
  volume = {},
  number = {},
  pages = {},
  doi = {10.1109/ETFA54631.2023.10275363},
  url = {}
}

@InProceedings{OvsiannikovaETFA2023,
  author = {P. {Ovsiannikova} and A. {Pakonen} and V. {Vyatkin}},
  booktitle = {28th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2023)},
  title = {Automatic generation of repair suggestions for overall I\&C architecture represented with an ontology},
  year = {2023},
  volume = {},
  number = {},
  pages = {},
  doi = {},
  url = {10.1109/ETFA54631.2023.10275557}
}

@InProceedings{PakonenNPIC2023,
  author = {A. {Pakonen}},
  booktitle = {13th Nuclear Plant Instrumentation, Control and Human Machine Interface Technologies (NPIC \& HMIT)},
  title = {Model-checking {I\&C} logics \textendash practical examples},
  year = {2023},
  volume = {},
  number = {},
  pages = {1610-1619},
  doi = {10.13182/NPICHMIT23-41122},
  url = {}
}

@InProceedings{PakonenNPIC2023,
  author = {K. {Bj\"{o}rkman}, A. {Pakonen}},
  booktitle = {13th Nuclear Plant Instrumentation, Control and Human Machine Interface Technologies (NPIC \& HMIT)},
  title = {Analyzing defense-in-depth properties of nuclear power plant instrumentation and control system architectures using ontologies},
  year = {2023},
  volume = {},
  number = {},
  pages = {1590-1599},
  doi = {10.13182/NPICHMIT23-41042},
  url = {}
}

@InProceedings{PakonenNPIC2023,
  author = {J. {Linnosmaa}, A. {Pakonen}, J. {Alanen}},
  booktitle = {13th Nuclear Plant Instrumentation, Control and Human Machine Interface Technologies (NPIC \& HMIT)},
  title = {Demonstration of a model-based approach for formal verification of {I\&C} logics},
  year = {2023},
  volume = {},
  number = {},
  pages = {1441-1450},
  doi = {10.13182/NPICHMIT23-41121},
  url = {}
}

@InProceedings{PakonenIECON2021,
   author = {A. {Pakonen} and T. {M\"{a}t\"{a}sniemi}},
   booktitle = {The 47th Annual Conference of the IEEE Industrial Electronics Society (IECON 2021)},
   title = {Ontology-based approach for analyzing nuclear overall {I\&C} architectures},
   year={2021},
   volume={},
   number={},
   pages={},
   doi={10.1109/IECON48115.2021.9589078}
}

@InProceedings{OvsiannikovaIECON2021,
   author = {P. {Ovsiannikova} and A. {Pakonen} and V. {Vyatkin}},
   booktitle = {The 47th Annual Conference of the IEEE Industrial Electronics Society (IECON 2021)},
   title = {Change-based causes in counterexample explanation for model checking},
   year={2021},
   volume={},
   number={},
   pages={},
   doi={10.1109/IECON48115.2021.9589122}
}

@InProceedings{PakonenISOFIC2021,
  author = {A. {Pakonen}},
  booktitle = {International Symposium on Future I\&C for Nuclear Power Plants (ISOFIC 2021)},
  title = {Oops! {Examples} of {I\&C} design issues detected with model checking},
  year = {2021},
  volume = {},
  number = {},
  pages = {},
  doi = {},
  url = {)
}

@InProceedings{PakonenINDIN2021,
  author = {A. {Pakonen}},
  booktitle = {The 19th IEEE International Conference on Industrial Informatics (INDIN 2021)},
  title = {Model-checking infinite-state nuclear safety {I\&C} systems with {nuXmv}},
  year = {2021},
  volume = {},
  number = {},
  pages = {},
  doi={10.1109/INDIN45523.2021.9557445}
}

@InProceedings{PakonenNPIC2021,
  author = {A. {Pakonen}},
  booktitle = {12th International Topical Meeting on Nuclear Plant Instrumentation, Control and Human Machine Interface Technologies (NPIC \& HMIT)},
  title = {Model-checking of {I\&C} logics \textendash insights from over a decade of projects in {Finland}},
  year = {2021},
  volume = {},
  number = {},
  pages = {792-801},
  doi = {10.13182/T124-34322},
  url = {}
}

@InProceedings{OvsiannikovaICECCS2020,
   author = {P. {Ovsiannikova} and I. {Buzhinsky} and A. {Pakonen} and V. {Vyatkin}},
   booktitle = {25th International Conference on Engineering of Complex Computer Systems (ICECCS 2020)},
   title = {Visual counterexample explanation for model checking with {Oeritte}},
   year={2021},
   volume={},
   number={},
   pages={1-10},
   doi={10.1109/ICECCS51672.2020.00008}
}

@InProceedings{PakonenIECON2020,
   author = {A. {Pakonen} and P. {Biswas} and N. {Papakonstantinou}},
   booktitle = {The 46th Annual Conference of the IEEE Industrial Electronics Society (IECON 2020)}, 
   title = {Transformation of non-standard nuclear {I\&C} logic drawings to formal verification models}, 
   year={2020},
   volume={},
   number={},
   pages={697-704},
   doi={10.1109/IECON43393.2020.9255176}
}

@InProceedings{LinnosmaaIECON2020,
   author = {J. {Linnosmaa} and A. {Pakonen} and N. {Papakonstantinou} and P. {Karpati}}, 
   booktitle = {The 46th Annual Conference of the IEEE Industrial Electronics Society (IECON 2020)},
   title =  {Applicability of {AADL} in modelling the overall {I\&C} architecture of a nuclear power plant},
   year={2020},
   volume={},
   number={},
   pages={4337-4344},
   doi={10.1109/IECON43393.2020.9254226}
}

@InProceedings{BuzhinskyINDIN2020,
  author = {I. {Buzhinsky} and A. {Pakonen}},
  booktitle = {The 18th IEEE International Conference on Industrial Informatics (INDIN 2020)},
  title = {Timed model checking of fault-tolerant nuclear {I\&C} systems},
  year = {2020},
  volume = {},
  number = {},
  pages = {159-164},
  doi={10.1109/INDIN45582.2020.9442188}
}

@InProceedings{PakonenICIT2019,
  author = {A. {Pakonen} and I. {Buzhinsky}},
  booktitle = {The 20th IEEE International Conference on Industrial Technology (ICIT 2019)},
  title = {Verification of fault tolerant safety {I\&C} systems using model checking},
  year = {2019},
  volume = {},
  number = {},
  pages = {969-974},
  doi = {10.1109/ICIT.2019.8755014}
}

@InProceedings{BjorkmanESREL2019,
  author = {K. {Bj\"{o}rkman} and A. {Pakonen}},
  booktitle = {The 29th European Safety and Reliability Conference (ESREL 2019)},
  title = {Coupling Model Checking and {PSA} \textendash A Case Study},
  year = {2019},
  volume = {},
  number = {},
  pages = {2789-2796},
  doi = {10.3850/978-981-11-2724-3_0418-cd}
}

@InProceedings{PakonenINDIN2018,
  author = {A. {Pakonen} and I. {Buzhinsky} and V. {Vyatkin}},
  booktitle = {The 16th IEEE International Conference on Industrial Informatics (INDIN 2018)},
  title = {Counterexample visualization and explanation for function block diagrams},
  year = {2018},
  volume = {},
  number = {},
  pages = {747-753},
  doi = {10.1109/INDIN.2018.8472025}
}

@InProceedings{BuzhinskyISIE2018,
  author = {I. {Buzhinsky} and A. {Pakonen} and V. {Vyatkin}},
  booktitle = {The 27th IEEE International Symposium on Industrial Electronics (ISIE 2018)},
  title = {Synthesis-Aided Reliability Assurance of Basic Block Models for Model Checking Purposes},
  year = {2018},
  volume = {}, 
  number = {},
  pages = {669-674},
  doi = {10.1109/ISIE.2018.8433793}
}

@InProceedings{PakonenESREL2017,
  author = {A. {Pakonen} and K. {Bj\"{o}rkman}},
  booktitle = {The 27th European Safety and Reliability Conference (ESREL 2017)},
  title = {Model checking as a protective method against spurious actuation of industrial control systems},
  year = {2017},
  volume = {},
  number = {},
  pages = {},
  doi = {},
  url = {https://cris.vtt.fi/files/23031295/Pakonen_ESREL2017_Accepted_Manuscript.pdf}
}

@InProceedings{PakonenNPIC2017,
  author = {A. {Pakonen} and T. {Tahvonen} and M. {Hartikainen} and M. {Pihlanko}},
  booktitle = {10th ANS International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies (NPIC \& HMIT 2017)},
  title = {Practical applications of model checking in the {Finnish} nuclear industry},
  year = {2017},
  volume = {},
  number = {},
  pages = {},
  doi = {},
  url = {http://www.vtt.fi/inf/julkaisut/muut/2017/OA-Practical_applications_of_model_checking.pdf}
}

@InProceedings{BuzhinskyIECON2017explicit,
  author = {I. {Buzhinsky} and A. {Pakonen} and V. {Vyatkin}},
  booktitle = {The 43rd Annual Conference of the IEEE Industrial Electronics Society (IECON 2017},
  title = {Explicit-state and symbolic model checking of nuclear {I\&C} systems: A comparison},
  year = {2017}, 
  volume = {},
  number = {},
  pages = {5439-5446},
  doi = {10.1109/IECON.2017.8216942}
}

@InProceedings{BuzhinskyIECON2017scalable,
  author = {I. {Buzhinsky} and A. {Pakonen} and V. {Vyatkin}},
  booktitle = {The 43rd Annual Conference of the IEEE Industrial Electronics Society (IECON 2017)}, 
  title = {Scalable methods of discrete plant model generation for closed-loop model checking}, 
  year = {2017},
  volume = {},
  number = {},
  pages = {5483-5488},
  doi = {10.1109/IECON.2017.8216949}
}

@InProceedings{PakonenETFA2016,
  author = {A. {Pakonen} and C. {Pang} and I. {Buzhinsky} and V. {Vyatkin}},
  booktitle = {The 21st IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2016)},
  title = {User-friendly formal specification languages \textendash conclusions drawn from industrial experience on model checking},
  year = {2016},
  volume = {},
  number = {},
  pages = {},
  doi = {10.1109/ETFA.2016.7733717}
}

@InProceedings{PangINDIN2016,
  author = {C. {Pang} and A. {Pakonen} and I. {Buzhinsky} and V. {Vyatkin}},
  booktitle = {2016 IEEE 14th International Conference on Industrial Informatics (INDIN)},
  title = {A study on user-friendly formal specification languages for requirements formalization},
  year = {2016},
  volume ={},
  number = {},
  pages = {676-682},
  doi = {10.1109/INDIN.2016.7819246}
}

@InProceedings{PakonenAutomaatio2015,
  author = {A. {Pakonen} and J. {Valkonen} and S. {Matinaho} and M. {Hartikainen}},
  booktitle = {Automaatio XXI},
  title = {Model checking of I&C software in the Loviisa NPP automation renewal project},
  year = {2015},
  volume = {},
  number = {},
  pages = {676-682},
  doi = {},
  url = {https://www.automaatioseura.fi/site/assets/files/1550/f2045.pdf)
}

@InProceedings{PakonenISOFIC2014,
  author = {A. {Pakonen} and J. {Valkonen} and S. {Matinaho} and M. {Hartikainen}},
  booktitle = {International Symposium on Future I&C for Nuclear Power Plants (ISOFIC 2014)},
  title = {Model checking for licensing support in the {Finnish} nuclear industry},
  year = {2014},
  volume = {},
  number = {},
  pages = {},
  doi = {},
  url = {http://www.vtt.fi/inf/julkaisut/muut/2014/ISOFIC_2014_Pakonen_et_al_FINAL.pdf)
}

@InProceedings{PakonenETFA2013,
  author = {A. {Pakonen} and T. {M\"{a}t\"{a}sniemi} and J. {Lahtinen} and T. {Karhela}},
  booktitle = {The 18th IEEE International Conference on Emerging Technologies \& Factory Automation (ETFA 2013)},
  title = {A toolset for model checking of {PLC} software},
  year = {2013},
  volume = {},
  number = {},
  pages = {},
  doi = {10.1109/ETFA.2013.6648065}
}

@InProceedings{TimonenKEOD2013,
  author = {Mika Timonen and Antti Pakonen and Teemu Tommila},
  title = {Using Associations and Fuzzy Ontologies for Modeling Chemical Safety Information},
  booktitle = {The 2013 International Conference on Knowledge Engineering and Ontology Development (KEOD 2013)},
  year = {2013},
  pages = {26-37},
  publisher={SciTePress},
  organization={INSTICC},
  doi={10.5220/0004536400260037},
  isbn={978-989-8565-81-5},
}

@InProceedings{PakonenNPIC2012,
  author = {A. {Pakonen} and T. {M\"{a}t\"{a}sniemi} and J. {Valkonen}},
  booktitle = {The 8th ANS International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies (NPIC \& HMIT 2012)},
  title = {Model checking reveals hidden errors in safety-critical {I\&C} software},
  year = {2012},
  volume = {},
  number = {},
  pages = {},
  doi = {}
}

@InProceedings{PakonenETFA2010,
  author = {A. {Pakonen} and T. {Tommila} and J. {Hirvonen}},
  booktitle = {The 15th IEEE International Conference on Emerging Technologies \& Factory Automation (ETFA 2010)},
  title = {A fuzzy ontology based approach for mobilising industrial plant knowledge},
  year={2010},
  volume={},
  number={},
  pages={},
  doi={10.1109/ETFA.2010.5641200}
}

@InProceedings{HirvonenKEOD2010,
  author = {Juhani Hirvonen and Teemu Tommila and Antti Pakonen and Christer Carlsson and Mario Fedrizzi and Robert Full\'{e}r.},
  title = {Fuzzy keyword ontology for annotating and searching event reports},
  booktitle = {The 2010 International Conference on Knowledge Engineering and Ontology Development (KEOD 2010)},
  year = {2010},
  pages = {251-256},
  publisher = {SciTePress},
  organization = {INSTICC},
  doi = {10.5220/0003091002510256},
  isbn = {978-989-8425-29-4},
}

@InProceedings{PakonenNPIC2010,
  author = {A. {Pakonen} and J. {Lahtinen} and V.-P. {Kuutti} and T. {Karhela}},
  booktitle = {The 8th ANS International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies (NPIC \& HMIT 2012)},
  title = {Integrating model checking with safety-critical {I\&C} software design},
  year = {2010},
  volume = {},
  number = {},
  pages = {},
  doi = {}
}

@InProceedings{PakonenETFA2007,
  author = {A. {Pakonen} and T. {Tommila} and T. {Pirttioja} and I. {Seilonen}},
  booktitle = {The 12th IEEE International Conference on Emerging Technologies and Factory Automation (EFTA 2007)},
  title = {{OWL} based information agent services for process monitoring},
  year={2007},
  volume={},
  number={},
  pages={9-16},
  doi={10.1109/EFTA.2007.4416747}
}

@InProceedings{PirttiojaHOLOMAS2007,
  author = {Pirttioja, Teppo and Seilonen, Ilkka and Pakonen, Antti and Halme, Aarne and Koskinen, Kari},
  editor = {Ma{\v{r}}{\'i}k, Vladim{\'i}r and Vyatkin, Valeriy and Colombo, Armando W.},
  title = {Information Agents Handling Semantic Data as an Extension to Process Monitoring Systems},
  booktitle = {Holonic and Multi-Agent Systems for Manufacturing}, 
  year = {2007}, 
  publisher = {Springer Berlin Heidelberg},
  address= {Berlin, Heidelberg,
  pages = {411-420},
  doi = {10.1007/978-3-540-74481-8_39}
}

@InProceedings{PakonenETFA2006,
  author = {A. {Pakonen} and T. {Pirttioja} and I. {Seilonen} and T. {Tommila}},
  booktitle = {The 11th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2006)},
  title = {Proactive Computing in Process Monitoring: Information Agents for Operator Support},
  year={2006},
  volume={},
  number={},
  pages={153-158},
  doi={10.1109/ETFA.2006.355408}
}

@InProceedings{SeilonenINDIN2006,
  author = {I. {Seilonen} and T. {Pirttioja} and A. {Halme} and K. {Koskinen} and A. {Pakonen}},
  booktitle = {The 4th IEEE International Conference on Industrial Informatics (INDIN 2006)},
  title = {Indirect Process Monitoring with Constraint Handling Agents},
  year={2006},
  volume={},
  number={},
  pages={1323-1328},
  doi={10.1109/INDIN.2006.275851}
}

@InProceedings{PirttiojaDIS2006",
  author = {T. {Pirttioja} and A. {Halme} and A. {Pakonen} and I. {Seilonen} and K. {Koskinen}},
  booktitle = {2006 IEEE Workshop on Distributed Intelligent Systems: Collective Intelligence and Its Applications (DIS 2006)},
  title = {Multi-Agent System Enhanced Supervision of Process Automation},
  year={2006},
  volume={},
  number={},
  pages={151-156},
  doi={10.1109/DIS.2006.53}
}

@InProceedings{SeilonenHOLOMAS2005,
  author = {Seilonen, Ilkka and Pirttioja, Teppo and Pakonen, Antti and Appelqvist, Pekka and Halme, Aarne and Koskinen, Kari}, 
  editor = {Ma{\v{r}}{\'i}k, Vladim{\'i}r and William Brennan, Robert and P{\v{e}}chou{\v{c}}ek, Michal},
  title = {Information Access and Control Operations in Multi-agent System Based Process Automation},
  booktitle = {Holonic and Multi-Agent Systems for Manufacturing},
  year = {2005},
  publisher = {Springer Berlin Heidelberg}, 
  address = {Berlin, Heidelberg},
  pages = {144-153}, 
  isbn = {978-3-540-31831-6},
  doi = {10.1007/11537847_13}
}

@InProceedings{PirttiojaINDIN2005,
  author = {T. {Pirttioja} and A. {Pakonen} and I. {Seilonen} and A. {Halme} and K. {Koskinen}},
  booktitle = {The 3rd IEEE International Conference on Industrial Informatics (INDIN 2005)},
  title = {Multi-agent based information access services for condition monitoring in process automation},
  year = {2005},
  volume = {},
  number = {},
  pages = {240-245},
  doi = {10.1109/INDIN.2005.1560383}
}

@article{PakonenSD2023,
  author={Pakonen, Antti and Turunen, Juha},
  journal={SIGNAL+DRAHT},
  title={Using model checking for interlocking software verification},
  year={2023},
  volume={},
  number={9},
  pages={},
  doi={}
}

@techreport{HelminenVTT2020,
  author = {A. Helminen and A. Pakonen},
  type = {VTT Technical Report},
  number = {VTT-R-00017-20},
  year = {2020},  
  title = {Potential applications of model checking in probabilistic risk assessments},
  url = {https://cris.vtt.fi/files/27299692/VTT_R_00017_20.pdf},
  institution = {VTT Technical Research Centre of Finland Ltd.}
}

@techreport{TommilaVTT2014,
  author = {T. Tommila and A. Pakonen},
  type = {VTT Research Report},
  number = {VTT-R-01067-14},
  year = {2014},
  title = {Controlled natural language requirements in the design and analysis of safety critical {I\&C} systems},
  url = {https://www.vttresearch.com/sites/default/files/julkaisut/muut/2014/VTT-R-01067-14.pdf},
  institution = {VTT Technical Research Centre of Finland Ltd.}
}

@techreport{TommilaVTT2010,
  author = {T. Tommila and J. Hirvonen and A. Pakonen},
  type = {VTT Working Papers},
  number = {153},
  year = {2010},
  title = {Fuzzy ontologies for retrieval of industrial knowledge: A case study},
  url = {http://www.vtt.fi/inf/pdf/workingpapers/2010/W153.pdf},
  institution = {VTT Technical Research Centre of Finland Ltd.}
}