Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1970__11_3_a9, author = {Nebesk\'y, Ladislav}, title = {Graphic algebras}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {533--544}, publisher = {mathdoc}, volume = {11}, number = {3}, year = {1970}, mrnumber = {0268107}, zbl = {0208.02701}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1970__11_3_a9/} }
Nebeský, Ladislav. Graphic algebras. Commentationes Mathematicae Universitatis Carolinae, Tome 11 (1970) no. 3, pp. 533-544. http://geodesic.mathdoc.fr/item/CMUC_1970__11_3_a9/