%0 Journal Article %A A. V. Petrikov %T On orbits of points on the Lobachevskii plane under the action of integer matrices %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 2006 %P 50-53 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_2006_6_a11/ %G ru %F VMUMM_2006_6_a11