@InProceedings{xue:LIPIcs.TYPES.2013.251,
  author =	{Xue, Tao},
  title =	{{Definitional Extension in Type Theory}},
  booktitle =	{19th International Conference on Types for Proofs and Programs (TYPES 2013)},
  pages =	{251--269},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-72-9},
  ISSN =	{1868-8969},
  year =	{2014},
  volume =	{26},
  editor =	{Matthes, Ralph and Schubert, Aleksy},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.TYPES.2013.251},
  URN =		{urn:nbn:de:0030-drops-46352},
  doi =		{10.4230/LIPIcs.TYPES.2013.251},
  annote =	{Keywords: conservative extension, definitional extension, subtype, coercive subtyping}
}