The rate of convergence of (C, 1)-means of orthogonal series
1970 ◽
Vol 22
(2)
◽
pp. 230-239
◽
1990 ◽
Vol 42
(10)
◽
pp. 1161-1168
◽
1986 ◽
Vol 48
(1)
◽
pp. 115-122
◽