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@article{IVM_1965_5_a1, author = {A. M. Anchikov}, title = {The invariant tensor criterion for conformally reducible {Riemannian} spaces}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {13--18}, publisher = {mathdoc}, number = {5}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1965_5_a1/} }
A. M. Anchikov. The invariant tensor criterion for conformally reducible Riemannian spaces. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (1965), pp. 13-18. http://geodesic.mathdoc.fr/item/IVM_1965_5_a1/