%0 Journal Article %A V. V. Ermakov %T A~group of transformations connected with the Markov cubic surface %J Matematičeskie zametki %D 1976 %P 419-428 %V 19 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1976_19_3_a10/ %G ru %F MZM_1976_19_3_a10