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@article{DAN_1968_180_5_a13, author = {V. P. Karklin}, title = {The ellipticity of the trajectory of free motions of the earth pole}, journal = {Doklady Akademii Nauk}, pages = {1064--1066}, publisher = {mathdoc}, volume = {180}, number = {5}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_180_5_a13/} }
V. P. Karklin. The ellipticity of the trajectory of free motions of the earth pole. Doklady Akademii Nauk, Tome 180 (1968) no. 5, pp. 1064-1066. http://geodesic.mathdoc.fr/item/DAN_1968_180_5_a13/