TorreG91'

@inproceedings{DBLP:conf/spdp/TorreG91,
  author    = {Pilar de la Torre and
               Raymond Greenlaw},
  title     = {Super critical tree numbering and optimal tree ranking are
               in NC},
  booktitle = {SPDP},
  year      = {1991},
  pages     = {767-773},
  ee        = {http://dx.doi.org/10.1109/SPDP.1991.218243},
  crossref  = {DBLP:conf/spdp/1991},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/spdp/1991,
  title     = {Proceedings of the Third IEEE Symposium on Parallel and
               Distributed Processing, SPDP 1991, 2-5 December 1991, Dallas,
               Texas, USA},
  booktitle = {SPDP},
  publisher = {IEEE Computer Society},
  year      = {1991},
  isbn      = {0-8186-2310-1},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}