C
[Coo71] Stephen A. Cook. The complexity of Theorem Proving Procedures. In STOC'71, pages 151-158. ACM Press, 1971. 
@inproceedings{stoc1971-Coo,
  author =              {Cook, Stephen A.},
  title =               {The complexity of Theorem Proving Procedures},
  booktitle =           {{P}roceedings of the 3rd {A}nnual {ACM} {S}ymposium
                         on the {T}heory of {C}omputing ({STOC}'71)},
  acronym =             {{STOC}'71},
  publisher =           {ACM Press},
  pages =               {151-158},
  year =                {1971},
}
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