%
%	Porteous94	Geometric Differentiation
%	Porteous83	The Normal Singularities of Surfaces in R^3
%	Porteous71	The Normal Singularities of a Submanifold
%


@Book{Porteous94,
  author = 	 "Ian Porteous",
  title = 	 "Geometric Differentiation - for the intelligence of
		  curves and surfaces",
  publisher = 	 "Cambridge University Press",
  year = 	 "1994",
  OPTeditor = 	 "",
  OPTvolume = 	 "",
  OPTseries = 	 "",
  address =	 "Cambridge, UK",
  note =	 "301 pages.",
  OPTannote = 	 ""
}

@InProceedings{Porteous83Normal,
  author = 	{I. R. Porteous},
  title = 	{The Normal Singularities of Surfaces in $\Re^3$},
  booktitle = 	{Proc. of Symp. Pure Math.},
  year = 	1983,
  OPTeditor = 	"",
  volume =	{40 (Pt. 2)},
  pages = 	{379--393},
  organization = AMS,
  OPTaddress = 	"",
  OPTmonth = 	"",
}

@ArticlePorteous71Normal{,
  author = 	 "I. R. Porteous",
  title = 	 "The Normal Singularities of a Submanifold",
  journal =	 "Journal of Differential Geometry",
  year =	 "1971",
  volume =	 "5",
  OPTnumber = 	 "",
  pages =	 "543--564",
  OPTmonth = 	 "",
  OPTnote = 	 "",
}