@article{DMGT_1999_19_2_a4,
     author = {Broere, Izak and Teboho Moagi, Samuel and Mih\'ok, Peter and Vasky, Roman},
     title = {Factorizations of properties of graphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {167--174},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_1999_19_2_a4/}
}