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@article{IVM_1991_4_a9, author = {V. S. Sobchuk}, title = {Geodesic mapping of {Ricci} 4-symmetric {Riemannian} spaces}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {69--70}, publisher = {mathdoc}, number = {4}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1991_4_a9/} }
V. S. Sobchuk. Geodesic mapping of Ricci 4-symmetric Riemannian spaces. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 4 (1991), pp. 69-70. http://geodesic.mathdoc.fr/item/IVM_1991_4_a9/