@article{DMGT_1999_19_2_a2,
     author = {Berger, Amelie and Broere, Izak},
     title = {Minimal reducible bounds for hom-properties of graphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {143--158},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_1999_19_2_a2/}
}