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@article{PIM_1977_N_S_22_36_a35, author = {Risto \v{S}okarovski}, title = {A {Generalized} {Direct} {Product} {Of} {Graphs}}, journal = {Publications de l'Institut Math\'ematique}, pages = {267 }, publisher = {mathdoc}, volume = {_N_S_22}, number = {36}, year = {1977}, url = {http://geodesic.mathdoc.fr/item/PIM_1977_N_S_22_36_a35/} }
Risto Šokarovski. A Generalized Direct Product Of Graphs. Publications de l'Institut Mathématique, _N_S_22 (1977) no. 36, p. 267 . http://geodesic.mathdoc.fr/item/PIM_1977_N_S_22_36_a35/