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- W2001532261 abstract "Let G be a graph Sedláček [2] has shown that the line graph of G is planar if and only if G is planar, the degree of each point is at most four and all points of degree four are cutpoints. In this paper, we use this result to show that G has a planar line graph if and only if G has no subgraph homeomorphic to K 3.3 , K 1.5 , P 4 + K 1 or K 2 + K 3 ." @default.
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- W2001532261 date "1972-03-01" @default.
- W2001532261 modified "2023-10-16" @default.
- W2001532261 title "Forbidden subgraphs for graphs with planar line graphs" @default.
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- W2001532261 doi "https://doi.org/10.1016/0012-365x(72)90058-1" @default.
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