Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1977__13_3_a5, author = {Pol\'ak, Libor}, title = {On varieties of non-indexed algebras}, journal = {Archivum mathematicum}, pages = {169--174}, publisher = {mathdoc}, volume = {13}, number = {3}, year = {1977}, mrnumber = {0463079}, zbl = {0373.08002}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1977__13_3_a5/} }
Polák, Libor. On varieties of non-indexed algebras. Archivum mathematicum, Tome 13 (1977) no. 3, pp. 169-174. http://geodesic.mathdoc.fr/item/ARM_1977__13_3_a5/