%0 Journal Article %A Yu. D. Kobyzev %T Invariant differential operators and singular vectors for the algebras $S_n$ %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1986 %P 3-7 %N 2 %U http://geodesic.mathdoc.fr/item/VMUMM_1986_2_a0/ %G ru %F VMUMM_1986_2_a0