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@article{IVM_1971_2_a10, author = {V. E. Mel'nikov}, title = {Riemannian spaces that admit a~group of motions with reducible isotropy group}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {81--89}, publisher = {mathdoc}, number = {2}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1971_2_a10/} }
V. E. Mel'nikov. Riemannian spaces that admit a~group of motions with reducible isotropy group. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (1971), pp. 81-89. http://geodesic.mathdoc.fr/item/IVM_1971_2_a10/