%0 Journal Article %A V. E. Mel'nikov %T Riemannian spaces that admit a~group of motions with reducible isotropy group %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1971 %P 81-89 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1971_2_a10/ %G ru %F IVM_1971_2_a10