@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},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}
@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,
               2002, Proceedings},
  booktitle = {TPHOLs},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {2410},
  year      = {2002},
  isbn      = {3-540-44039-9},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@techreport{PVS:Interpretations,
        Author= {S. Owre and N. Shankar},
        Title= {Theory Interpretations in PVS},
        Number= {SRI-CSL-01-01},
        Institution= {Computer Science Laboratory, SRI International},
        Address= {Menlo Park, CA},
        Month= {April},
        Year= {2001}}

@inproceedings{ChicliPS02,
  author    = {Laurent Chicli and
               Loic Pottier and
               Carlos Simpson},
  title     = {Mathematical Quotients and Quotient Types in Coq},
  booktitle = {TYPES},
  year      = {2002},
  pages     = {95-107},
  ee        = {http://link.springer.de/link/service/series/0558/bibs/2646/26460095.htm},
  crossref  = {DBLP:conf/types/2002},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/types/2002,
  editor    = {Herman Geuvers and
               Freek Wiedijk},
  title     = {Types for Proofs and Programs, Second International Workshop,
               TYPES 2002, Berg en Dal, The Netherlands, April 24-28, 2002,
               Selected Papers},
  booktitle = {TYPES},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {2646},
  year      = {2003},
  isbn      = {3-540-14031-X},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@article{Paulson06,
  author    = {Lawrence C. Paulson},
  title     = {Defining functions on equivalence classes},
  journal   = {ACM Trans. Comput. Log.},
  volume    = {7},
  number    = {4},
  year      = {2006},
  pages     = {658-675},
  ee        = {http://doi.acm.org/10.1145/1183278.1183280},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@inproceedings{Slotosch97,
  author    = {Oscar Slotosch},
  title     = {Higher Order Quotients and their Implementation in Isabelle
               HOL},
  booktitle = {TPHOLs},
  year      = {1997},
  pages     = {291-306},
  ee        = {http://dx.doi.org/10.1007/BFb0028401},
  crossref  = {DBLP:conf/tphol/1997},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}
@proceedings{DBLP:conf/tphol/1997,
  editor    = {Elsa L. Gunter and
               Amy P. Felty},
  title     = {Theorem Proving in Higher Order Logics, 10th International
               Conference, TPHOLs'97, Murray Hill, NJ, USA, August 19-22,
               1997, Proceedings},
  booktitle = {TPHOLs},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {1275},
  year      = {1997},
  isbn      = {3-540-63379-0},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@inproceedings{Homeier05,
  author    = {Peter V. Homeier},
  title     = {A Design Structure for Higher Order Quotients},
  booktitle = {TPHOLs},
  year      = {2005},
  pages     = {130-146},
  ee        = {http://dx.doi.org/10.1007/11541868_9},
  crossref  = {DBLP:conf/tphol/2005},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}
@proceedings{DBLP:conf/tphol/2005,
  editor    = {Joe Hurd and
               Thomas F. Melham},
  title     = {Theorem Proving in Higher Order Logics, 18th International
               Conference, TPHOLs 2005, Oxford, UK, August 22-25, 2005,
               Proceedings},
  booktitle = {TPHOLs},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {3603},
  year      = {2005},
  isbn      = {3-540-28372-2},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@BOOK{harrison-thesis,
        author          = "John Harrison",
        title           = "Theorem Proving with the Real Numbers",
        publisher       = "Springer-Verlag",
        year            = 1998}