@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/}
}