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@article{DAN_1987_294_4_a3, author = {Kh. P. Rustamov}, title = {On direct and inverse theorems for the best $L_p$-approximation on a sphere}, journal = {Doklady Akademii Nauk}, pages = {788--791}, publisher = {mathdoc}, volume = {294}, number = {4}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1987_294_4_a3/} }
Kh. P. Rustamov. On direct and inverse theorems for the best $L_p$-approximation on a sphere. Doklady Akademii Nauk, Tome 294 (1987) no. 4, pp. 788-791. http://geodesic.mathdoc.fr/item/DAN_1987_294_4_a3/