@article{DMGT_2008_28_2_a7,
     author = {\v{S}pacapan, Simon and Horvat, Aleksandra},
     title = {On acyclic colorings of direct products},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {323--333},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2008_28_2_a7/}
}