@article{DBLP:journals/cj/FurtadoM85,
  author    = {Antonio L. Furtado and
               T. S. E. Maibaum},
  title     = {An Informal Approach to Formal (Algebraic) Specifications},
  journal   = {Comput. J.},
  volume    = {28},
  number    = {1},
  year      = {1985},
  pages     = {59-67},
  ee        = {http://dx.doi.org/10.1093/comjnl/28.1.59},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}