@inproceedings{DBLP:conf/sde/AlpernCRSZ88,
  author    = {Bowen Alpern and
               Alan Carle and
               Barry K. Rosen and
               Peter F. Sweeney and
               F. Kenneth Zadeck},
  title     = {Graph Attribution as a Specification Paradigm},
  booktitle = {Software Development Environments (SDE)},
  year      = {1988},
  pages     = {121-129},
  ee        = {http://doi.acm.org/10.1145/64135.65015},
  crossref  = {DBLP:conf/sde/1988},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/sde/1988,
  editor    = {Peter B. Henderson},
  title     = {Proceedings of the ACM SIGSOFT/SIGPLAN Software Engineering
               Symposium on Practical Software Development Environments,
               Boston, Massachusetts, USA, November 28-30, 1988},
  booktitle = {SDE},
  publisher = {ACM},
  year      = {1989},
  isbn      = {0-89791-290-X},
  ee        = {http://dl.acm.org/citation.cfm?id=64135},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}