@inproceedings{Nogin02,
  author    = {Aleksey Nogin},
  title     = {Quotient Types: A Modular Approach},
  booktitle = {TPHOLs},
  year      = {2002},
  pages     = {263-280},
  ee        = {http://link.springer.de/link/service/series/0558/bibs/2410/24100263.htm},
  crossref  = {DBLP:conf/tphol/2002},
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}
@proceedings{DBLP:conf/tphol/2002,
  editor    = {Victor Carre{\~n}o and
               C{\'e}sar Mu{\~n}oz and
               Sofi{\`e}ne Tahar},
  title     = {Theorem Proving in Higher Order Logics, 15th International
               Conference, TPHOLs 2002, Hampton, VA, USA, August 20-23,
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  booktitle = {TPHOLs},
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  series    = {Lecture Notes in Computer Science},
  volume    = {2410},
  year      = {2002},
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@techreport{PVS:Interpretations,
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        Year= {2001}}

@inproceedings{ChicliPS02,
  author    = {Laurent Chicli and
               Loic Pottier and
               Carlos Simpson},
  title     = {{M}athematical {Q}uotients and {Q}uotient {T}ypes in {C}oq},
  booktitle = {TYPES},
  year      = {2002},
  pages     = {95-107},
  ee        = {http://link.springer.de/link/service/series/0558/bibs/2646/26460095.htm},
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@proceedings{DBLP:conf/types/2002,
  editor    = {Herman Geuvers and
               Freek Wiedijk},
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  booktitle = {TYPES},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {2646},
  year      = {2003},
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@article{Paulson06,
  author    = {Lawrence C. Paulson},
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@inproceedings{Slotosch97,
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  booktitle = {TPHOLs},
  year      = {1997},
  pages     = {291-306},
  ee        = {http://dx.doi.org/10.1007/BFb0028401},
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@proceedings{DBLP:conf/tphol/1997,
  editor    = {Elsa L. Gunter and
               Amy P. Felty},
  title     = {Theorem Proving in Higher Order Logics, 10th International
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@inproceedings{Homeier05,
  author    = {Peter V. Homeier},
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  year      = {2005},
  pages     = {130-146},
  ee        = {http://dx.doi.org/10.1007/11541868_9},
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@proceedings{DBLP:conf/tphol/2005,
  editor    = {Joe Hurd and
               Thomas F. Melham},
  title     = {Theorem Proving in Higher Order Logics, 18th International
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  booktitle = {TPHOLs},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
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  year      = {2005},
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@Unpublished{UrbanKaliszyk11,
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@InProceedings{BengtsonParrow07,
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@inproceedings{BengtsonParow09,
  author    = {J.~Bengtson and J.~Parrow},
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  year      = {2008},
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@InProceedings{UrbanCheneyBerghofer08,
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@InProceedings{UrbanZhu08,
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}