A note on the number of edges guaranteeing a C4 in Eulerian bipartite digraphs.
Shen, Jian ; Yuster, Raphael
The Electronic Journal of Combinatorics [electronic only], Tome DS10 (2002), / Harvested from The Electronic Library of Mathematics
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Publié le : 2002-01-01
EUDML-ID : urn:eudml:doc:122037 
@article{01730016,
     title = {A note on the number of edges guaranteeing a },
     journal = {The Electronic Journal of Combinatorics [electronic only]},
     volume = {DS10},
     year = {2002},
     zbl = {0994.05070},
     language = {en},
     url = {http://dml.mathdoc.fr/item/01730016}
}

Shen, Jian; Yuster, Raphael. A note on the number of edges guaranteeing a . The Electronic Journal of Combinatorics [electronic only], Tome DS10 (2002) . http://gdmltest.u-ga.fr/item/01730016/