BookC76'

BibTeX

@article{DBLP:journals/acta/BookC76,
  author    = {Ronald V. Book and
               Ashok K. Chandra},
  title     = {Inherently Nonplanar Automata},
  journal   = {Acta Inf.},
  volume    = {6},
  year      = {1976},
  pages     = {89-94},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}