@inproceedings{DBLP:conf/icalp/KokR88,
  author    = {Joost N. Kok and
               Jan J. M. M. Rutten},
  title     = {Contractions in Comparing Concurrent Semantics},
  booktitle = {ICALP},
  year      = {1988},
  pages     = {317-332},
  ee        = {http://dx.doi.org/10.1007/3-540-19488-6_125},
  crossref  = {DBLP:conf/icalp/1988},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/icalp/1988,
  editor    = {Timo Lepist{\"o} and
               Arto Salomaa},
  title     = {Automata, Languages and Programming, 15th International
               Colloquium, ICALP88, Tampere, Finland, July 11-15, 1988,
               Proceedings},
  booktitle = {ICALP},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {317},
  year      = {1988},
  isbn      = {3-540-19488-6},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}