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@article{DAN_1972_207_4_a12, author = {L. B. Grigoryeva and V. D. Zakharov}, title = {Recurrent curvature spaces in the general relativity theory}, journal = {Doklady Akademii Nauk}, pages = {814--816}, publisher = {mathdoc}, volume = {207}, number = {4}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1972_207_4_a12/} }
L. B. Grigoryeva; V. D. Zakharov. Recurrent curvature spaces in the general relativity theory. Doklady Akademii Nauk, Tome 207 (1972) no. 4, pp. 814-816. http://geodesic.mathdoc.fr/item/DAN_1972_207_4_a12/