Copilowish48'

BibTeX

@article{DBLP:journals/jsyml/Copilowish48,
  author    = {Irving M. Copilowish},
  title     = {Matrix Development of the Calculus of Relations},
  journal   = {J. Symb. Log.},
  volume    = {13},
  number    = {4},
  year      = {1948},
  pages     = {193-203},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}