COMBINATORICA · 1999 · 187 citations · 19 references
Natural SciencesMathematicsCombinatoricsDirected Acyclic GraphsGraph AlgorithmsGraph TheoryGraph EnumerationGraph HomomorphismsGraph IsomorphismPermutation Graphs
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The complexity of theorem-proving procedures
Stephen Cook · 1971 · 6.2K citations · Full text
The complexity of satisfiability problems
Thomas J. Schaefer · 1978 · 1.8K citations · Full text
Decomposition by clique separators
Robert E. Tarjan · Discrete Mathematics · 1985 · 439 citations
Star-cutsets and perfect graphs
Vašek Chvátal · Journal of Combinatorial Theory Series B · 1985 · 196 citations