@article{00920899,
title = {On alternating products of graph relations.},
journal = {S\'eminaire Lotharingien de Combinatoire [electronic only]},
volume = {33},
year = {1994},
zbl = {0855.05093},
language = {en},
url = {http://dml.mathdoc.fr/item/00920899}
}
Bodendiek, R.; Lang, R. On alternating products of graph relations.. Séminaire Lotharingien de Combinatoire [electronic only], Tome 33 (1994) . http://gdmltest.u-ga.fr/item/00920899/