Geodesic
Towards a characterization of bipartite switching classes by means of forbidden subgraphs
Discussiones Mathematicae. Graph Theory, Tome 27 (2007) no. 3, pp. 471-483.

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We investigate which switching classes do not contain a bipartite graph. Our final aim is a characterization by means of a set of critically non-bipartite graphs: they do not have a bipartite switch, but every induced proper subgraph does. In addition to the odd cycles, we list a number of exceptional cases and prove that these are indeed critically non-bipartite. Finally, we give a number of structural results towards proving the fact that we have indeed found them all. The search for critically non-bipartite graphs was done using software written in C and Scheme. We report on our experiences in coping with the combinatorial explosion.
Keywords: switching classes, bipartite graphs, forbidden subgraphs, combinatorial search 
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Hage, Jurriaan; Harju, Tero. Towards a characterization of bipartite switching classes by means of forbidden subgraphs. Discussiones Mathematicae. Graph Theory, Tome 27 (2007) no. 3, pp. 471-483. http://geodesic.mathdoc.fr/item/DMGT_2007_27_3_a5/

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