LiskovZ74'

@article{DBLP:journals/sigplan/LiskovZ74,
  author    = {Barbara Liskov and
               Stephen N. Zilles},
  title     = {Programming with Abstract Data Types},
  journal   = {SIGPLAN Notices},
  volume    = {9},
  number    = {4},
  year      = {1974},
  pages     = {50-59},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}