@article{DBLP:journals/tcs/Massol97,
  author    = {A. Massol},
  title     = {Minimality of the System of Seven Equations for the Category
               of Finite Sets},
  journal   = {Theor. Comput. Sci.},
  volume    = {176},
  number    = {1-2},
  year      = {1997},
  pages     = {347-353},
  ee        = {http://dx.doi.org/10.1016/S0304-3975(97)81498-3},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}