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@article{DAN_1963_152_1_a9, author = {G. I. Kruchkovich}, title = {Geodesic correspondence of semi-reducible {Riemannian} spaces}, journal = {Doklady Akademii Nauk}, pages = {43--45}, publisher = {mathdoc}, volume = {152}, number = {1}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1963_152_1_a9/} }
G. I. Kruchkovich. Geodesic correspondence of semi-reducible Riemannian spaces. Doklady Akademii Nauk, Tome 152 (1963) no. 1, pp. 43-45. http://geodesic.mathdoc.fr/item/DAN_1963_152_1_a9/