On a problem of L. Leindler concerning strong approximation by Fourier series and Lipschitz classes
1973 ◽
Vol 24
(1-2)
◽
pp. 223-227
◽
1980 ◽
Vol 35
(1-2)
◽
pp. 151-172
◽
2018 ◽
Vol 90
(2)
◽
pp. 8-17