%0 Journal Article %A R. M. Kashaev %T The pentagon equation and mapping-class groups of punctured surfaces %J Teoretičeskaâ i matematičeskaâ fizika %D 2000 %P 198-204 %V 123 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2000_123_2_a4/ %G ru %F TMF_2000_123_2_a4