@article{DMGT_2019_39_2_a7,
     author = {\v{S}pacapan, Simon},
     title = {On {3-Colorings} of {Direct} {Products} of {Graphs}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {391--413},
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2019_39_2_a7/}
}