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@article{DAN_1963_150_4_a5, author = {I. P. Egorov}, title = {Riemannian spaces of the first three lacunary types in the geometric sense}, journal = {Doklady Akademii Nauk}, pages = {730--732}, publisher = {mathdoc}, volume = {150}, number = {4}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1963_150_4_a5/} }
I. P. Egorov. Riemannian spaces of the first three lacunary types in the geometric sense. Doklady Akademii Nauk, Tome 150 (1963) no. 4, pp. 730-732. http://geodesic.mathdoc.fr/item/DAN_1963_150_4_a5/