%0 Journal Article %A B. P. Osilenker %T Linear summability methods for expansions of functions in the classes $L^p_\mu$ $(1\leqslant p\leqslant\infty)$ in orthonormal systems of polynomial type %J Izvestiya. Mathematics %D 1968 %P 709-724 %V 2 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1968_2_4_a2/ %G en %F IM2_1968_2_4_a2