@article{VMUMM_1986_2_a0,
     author = {Yu. D. Kobyzev},
     title = {Invariant differential operators and singular vectors for the algebras $S_n$},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {3--7},
     year = {1986},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1986_2_a0/}
}