GinsburgU66'

BibTeX

@article{DBLP:journals/jacm/GinsburgU66,
  author    = {Seymour Ginsburg and
               Joseph S. Ullian},
  title     = {Ambiguity in context free languages},
  journal   = {J. ACM},
  volume    = {13},
  number    = {1},
  year      = {1966},
  pages     = {62-89},
  ee        = {http://doi.acm.org/10.1145/321312.321318},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}