P4-colorings and P4-bipartite graphs.
Hoang, C.T. ; Le, V.B.
Discrete Mathematics and Theoretical Computer Science. DMTCS [electronic only], Tome 4 (2001), p. 109-122 / Harvested from The Electronic Library of Mathematics
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Publié le : 2001-01-01
EUDML-ID : urn:eudml:doc:121091 
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     journal = {Discrete Mathematics and Theoretical Computer Science. DMTCS [electronic only]},
     volume = {4},
     year = {2001},
     pages = {109-122},
     zbl = {0965.05041},
     language = {en},
     url = {http://dml.mathdoc.fr/item/01605778}
}

Hoang, C.T.; Le, V.B. P4-colorings and P4-bipartite graphs.. Discrete Mathematics and Theoretical Computer Science. DMTCS [electronic only], Tome 4 (2001) pp. 109-122. http://gdmltest.u-ga.fr/item/01605778/