Journal of Combinatorial Theory Series B · 1980 · 466 citations · 8 references
Natural SciencesMathematicsCombinatoricsDiscrete MathematicsSet TheoryCombinatorial Set TheoryDirected Acyclic GraphsGraph AlgorithmsGraph TheoryIndependent Set AlgorithmsMaximum Independent Set Approximation
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Jack Edmonds · Canadian Journal of Mathematics · 1965 · 2.4K citations · Full text
On the notion of balance of a signed graph.
Frank Harary · The Michigan Mathematical Journal · 1953 · 1K citations · Full text
Claude Berge · Proceedings of the National Academy of Sciences · 1957 · 574 citations · Full text