GallerF64a'

@article{DBLP:journals/cacm/GallerF64a,
  author    = {Bernard A. Galler and
               Michael J. Fischer},
  title     = {In defense of the equivalence algorithm},
  journal   = {Commun. ACM},
  volume    = {7},
  number    = {8},
  year      = {1964},
  pages     = {506},
  ee        = {http://doi.acm.org/10.1145/355586.364830},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}