Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1974__14_154292, author = {K. Braun and M. Kretz and B. Walter}, title = {Die chromatischen polynome {Unterringfreier} {Graphen.}}, journal = {Manuscripta mathematica}, pages = {223--234}, publisher = {mathdoc}, volume = {14}, year = {1974}, zbl = {0293.05113}, url = {http://geodesic.mathdoc.fr/item/MM2_1974__14_154292/} }
K. Braun; M. Kretz; B. Walter. Die chromatischen polynome Unterringfreier Graphen.. Manuscripta mathematica, Tome 14 (1974), pp. 223-234. http://geodesic.mathdoc.fr/item/MM2_1974__14_154292/