@inproceedings{DBLP:conf/fct/BednarekU77,
  author    = {Alexander R. Bednarek and
               S. M. Ulam},
  title     = {Some Remarks on Relational Composition in Computational
               Theory and Practice},
  booktitle = {FCT},
  year      = {1977},
  pages     = {22-32},
  ee        = {http://dx.doi.org/10.1007/3-540-08442-8_66},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}