Stewart91'

BibTeX

@article{DBLP:journals/logcom/Stewart91,
  author    = {Iain A. Stewart},
  title     = {Comparing the Expressibility of Languages Formed using NP-Complete
               Operators},
  journal   = {J. Log. Comput.},
  volume    = {1},
  number    = {3},
  year      = {1991},
  pages     = {305-330},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}