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@article{DE_1979_15_4_a15, author = {A. S. Fokht}, title = {Bounds for the derivatives of ultraspherical polynomials in the $L_p$, $1<p<+\infty$ and $C$~metrics}, journal = {Differencialʹnye uravneni\^a}, pages = {717--724}, publisher = {mathdoc}, volume = {15}, number = {4}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1979_15_4_a15/} }
A. S. Fokht. Bounds for the derivatives of ultraspherical polynomials in the $L_p$, $1