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@article{DAN_1968_180_2_a21, author = {V. N. Zharkov and V. M. Lyubimov}, title = {Perturbation theory for spheroidal oscillations of the {Earth}}, journal = {Doklady Akademii Nauk}, pages = {347--349}, publisher = {mathdoc}, volume = {180}, number = {2}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_180_2_a21/} }
V. N. Zharkov; V. M. Lyubimov. Perturbation theory for spheroidal oscillations of the Earth. Doklady Akademii Nauk, Tome 180 (1968) no. 2, pp. 347-349. http://geodesic.mathdoc.fr/item/DAN_1968_180_2_a21/