Journal of Combinatorial Theory Series B · 1979 · 17 citations · 3 references
Natural SciencesMathematicsGeometryTopologyGraph TheoryTopological Graph Theory
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Michael Morley, Robert L. Vaught · MATHEMATICA SCANDINAVICA · 1962 · 248 citations · Full text
A. Gardiner · Journal of Combinatorial Theory Series B · 1976 · 76 citations