%% -*-bibtex-*-
@STRING{tugboat	= {TUGboat} }
@STRING{dtk		= {{D}ie {\TeX}nische {K}om{\"o}die} }


@article{cortie93,
  author = {Cortie, Michael},
  year = {1993},
  month = {02},
  pages = {79-84},
  title = {Digital seashells},
  volume = {17},
  journal = {Computers \& Graphics},
  doi = {10.1016/0097-8493(93)90054-D},
  url ={https://www.researchgate.net/publication/223141547_Digital_seashells},
  urldate = {2026-06-12},
}

@online{picado93,
  title = {SEASHELLS: THE PLAINNESS AND BEAUTY OF THEIR MATHEMATICAL DESCRIPTION},
  author = {Jorge Picado},
  url = {http://www.mat.uc.pt/~picado/conchas/eng/article.pdf},
  urldate = {2026-06-12},
  institution = {Centre for Mathematics of the University of Coimbra},
  location = {3001-454 Coimbra, Portugal},
}

@Book{PSTricks2,
  author	= {Herbert Vo\ss{}},
  title		= {\texttt{PSTricks} -- {G}rafik f\"ur \TeX{} und \LaTeX},
  edition	= {7.},
  publisher	= {DANTE -- Lehmanns},
  year		= {2016},
  address	= {Heidelberg/Berlin}
}

@Book{casselman05,
  author	= {Bill Casselman},
  title		= {Mathematical {I}llustrations -- a manual of geometry and {P}ost{S}cript},
  publisher	= {Cambridge University Press},
  year		= {2005},
  address	= {Cambridge},
}


@Book{tlgc2,
  author	= {Michel Goosens and Frank Mittelbach and Sebastian Rahtz and Denis Roegel and Herbert Vo{\ss}},
  title		= {The {\LaTeX} {G}raphics {C}ompanion},
  publisher	= {{Addison-Wesley Publishing Company}},
  edition	= {2nd},
  year		= {2007},
  address	= {Reading, Mass.}
}

@book{meinhardt,
  title = {The Algorithmic Beauty of Sea Shells},
Author = {Hans Meinhardt},
Series = {The Virtual Laboratory},
DOI = {https://doi.org/10.1007/978-3-540-92142-4 },
Publisher = {Springer Verlag},
location = {Berlin and Heidelberg},
ISBN = {978-3-540-92141-7},
date = {2009-08-27},
ISSN = {1431-939X},
Edition = 4,
Pages = {XIV, 269},
keywords = { Zoology, Evolutionary Biology, Fine Arts, Life Sciences, general, 
	Computer Appl. in Life Sciences, Computer Graphics},
}

@online{schultz,
author = {Randolf Schultz}, 
date = {2008-07-08},
url = {http://www.shelly.de},
title = {Shelly lib},
urldate = {2026-06-14},
}