Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1984__20_3_a3, author = {Nov\'ak, V{\'\i}t\v{e}zslav}, title = {Operations on cyclically ordered sets}, journal = {Archivum mathematicum}, pages = {133--139}, publisher = {mathdoc}, volume = {20}, number = {3}, year = {1984}, mrnumber = {784864}, zbl = {0567.06002}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1984__20_3_a3/} }
Novák, Vítězslav. Operations on cyclically ordered sets. Archivum mathematicum, Tome 20 (1984) no. 3, pp. 133-139. http://geodesic.mathdoc.fr/item/ARM_1984__20_3_a3/