Hard examples for resolution.

Alasdair Urquhart: Hard examples for resolution. J. ACM 34(1): 209-219(1987)

@article{DBLP:journals/jacm/Urquhart87,
  author    = {Alasdair Urquhart},
  title     = {Hard examples for resolution},
  journal   = {J. ACM},
  volume    = {34},
  number    = {1},
  year      = {1987},
  pages     = {209-219},
  ee        = {db/journals/jacm/Urquhart87.html, http://doi.acm.org/10.1145/7531.8928},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

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