@inproceedings{DBLP:conf/lics/NicolaV90a,
  author    = {Rocco De Nicola and
               Frits W. Vaandrager},
  title     = {Three Logics for Branching Bisimulation (Extended Abstract)},
  booktitle = {LICS},
  year      = {1990},
  pages     = {118-129},
  crossref  = {DBLP:conf/lics/LICS5},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/lics/LICS5,
  title     = {Proceedings, Fifth Annual IEEE Symposium on Logic in Computer
               Science, 4-7 June 1990, Philadelphia, Pennsylvania, USA},
  booktitle = {LICS},
  publisher = {IEEE Computer Society},
  year      = {1990},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}