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@article{DAN_1957_116_6_a14, author = {N. E. Martyanov}, title = {Extension regions in the {Earth's} shell}, journal = {Doklady Akademii Nauk}, pages = {949--951}, publisher = {mathdoc}, volume = {116}, number = {6}, year = {1957}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1957_116_6_a14/} }
N. E. Martyanov. Extension regions in the Earth's shell. Doklady Akademii Nauk, Tome 116 (1957) no. 6, pp. 949-951. http://geodesic.mathdoc.fr/item/DAN_1957_116_6_a14/