@article{DMGT_2002_22_2_a4,
     author = {Broere, Izak and Dorfling, Samantha and Jonck, Elizabeth},
     title = {Generalized chromatic numbers and additive hereditary properties of graphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {259--270},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2002_22_2_a4/}
}