Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1971__12_3_a11, author = {K\v{r}ivka, Pavel}, title = {On homomorphism perfect graphs}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {619--626}, publisher = {mathdoc}, volume = {12}, number = {3}, year = {1971}, mrnumber = {0291023}, zbl = {0223.05128}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1971__12_3_a11/} }
Křivka, Pavel. On homomorphism perfect graphs. Commentationes Mathematicae Universitatis Carolinae, Tome 12 (1971) no. 3, pp. 619-626. http://geodesic.mathdoc.fr/item/CMUC_1971__12_3_a11/