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@article{MASLO_1981__31_1_a5, author = {Gedeonov\'a, Eva}, title = {The orientability of the direct product of graphs}, journal = {Mathematica slovaca}, pages = {71--78}, publisher = {mathdoc}, volume = {31}, number = {1}, year = {1981}, mrnumber = {619508}, zbl = {0469.05059}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1981__31_1_a5/} }
Gedeonová, Eva. The orientability of the direct product of graphs. Mathematica slovaca, Tome 31 (1981) no. 1, pp. 71-78. http://geodesic.mathdoc.fr/item/MASLO_1981__31_1_a5/