@book{Adamek04,
author = {Jíři Adámek and Horst Herrlich and George E. Strecker},
title = {Abstract and Concrete Categories. The Joy of Cats},
year = {2004},
publisher = {Online edition},
howpublished = {\url{http://katmat.math.uni-bremen.de/acc/acc.pdf}}
}

@article{Ehresmann12,
  author    = {Andr{\'{e}}e C. Ehresmann},
  title     = {MENS, an Info-Computational Model for (Neuro-)cognitive Systems Capable
               of Creativity},
  journal   = {Entropy},
  volume    = {14},
  number    = {9},
  pages     = {1703--1716},
  year      = {2012},
  url       = {http://dx.doi.org/10.3390/e14091703},
  doi       = {10.3390/e14091703},
  timestamp = {Tue, 27 Nov 2012 14:36:49 +0100},
  biburl    = {http://dblp.uni-trier.de/rec/bib/journals/entropy/Ehresmann12},
  bibsource = {dblp computer science bibliography, http://dblp.org}
}