Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1986__22_3_a1, author = {Nov\'ak, V{\'\i}t\v{e}zslav}, title = {Universal cyclic relations}, journal = {Archivum mathematicum}, pages = {125--128}, publisher = {mathdoc}, volume = {22}, number = {3}, year = {1986}, mrnumber = {868126}, zbl = {0616.08004}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1986__22_3_a1/} }
Novák, Vítězslav. Universal cyclic relations. Archivum mathematicum, Tome 22 (1986) no. 3, pp. 125-128. http://geodesic.mathdoc.fr/item/ARM_1986__22_3_a1/