%0 Journal Article %A O. A. Ziza %T On the rate of convergence of $(\varphi,\lambda)$-means of orthogonal series %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1995 %P 93-96 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1995_4_a18/ %G ru %F VMUMM_1995_4_a18