@inproceedings{DBLP:conf/stoc/BattistaV93,
  author    = {Giuseppe Di Battista and
               Luca Vismara},
  title     = {Angles of planar triangular graphs},
  booktitle = {STOC},
  year      = {1993},
  pages     = {431-437},
  ee        = {http://doi.acm.org/10.1145/167088.167207},
  crossref  = {DBLP:conf/stoc/STOC25},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/stoc/STOC25,
  editor    = {S. Rao Kosaraju and
               David S. Johnson and
               Alok Aggarwal},
  title     = {Proceedings of the Twenty-Fifth Annual ACM Symposium on
               Theory of Computing, May 16-18, 1993, San Diego, CA, USA},
  booktitle = {STOC},
  publisher = {ACM},
  year      = {1993},
  isbn      = {0-89791-591-7},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}