%0 Journal Article %A Novák, Vítězslav %T Operations on cyclically ordered sets %J Archivum mathematicum %D 1984 %P 133-139 %V 20 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1984__20_3_a3/ %G en %F ARM_1984__20_3_a3