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Dziobiak, Stanislaw
It is well known that the class of outerplanar graphs is minor-closed and can be characterized by two excluded minors: K_4 and K_{2,3}. The class of graphs that contain a vertex whose removal leaves an outerplanar graph is also minor-closed. We provi
Externí odkaz:
http://etd.lsu.edu/docs/available/etd-07062011-183918/
