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@article{DAN_1962_146_4_a8, author = {S. L. Sobolev}, title = {On the number of nodes of cubature formulae on a sphere}, journal = {Doklady Akademii Nauk}, pages = {770--773}, publisher = {mathdoc}, volume = {146}, number = {4}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1962_146_4_a8/} }
S. L. Sobolev. On the number of nodes of cubature formulae on a sphere. Doklady Akademii Nauk, Tome 146 (1962) no. 4, pp. 770-773. http://geodesic.mathdoc.fr/item/DAN_1962_146_4_a8/