%0 Journal Article %A G. G. Amanzhaev %T On the closure of a non-zero invariant Yablonsky's class by operation of variables identification %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1995 %P 76-79 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1995_3_a13/ %G ru %F VMUMM_1995_3_a13