@article{MASLO_1988_38_1_a0,
     author = {Klenov\v{c}an, Pavel},
     title = {Direct product decompositions of digraphs},
     journal = {Mathematica slovaca},
     pages = {3--10},
     year = {1988},
     volume = {38},
     number = {1},
     mrnumber = {945074},
     zbl = {0673.05042},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1988_38_1_a0/}
}