@article{01248234, title = {On the comparison of trigonometric convolution operators with their discrete analogues for Riemann integrable functions.}, journal = {Journal of Inequalities and Applications [electronic only]}, volume = {2}, year = {1998}, pages = {297-306}, doi = {10.1155/S1025583498000198}, zbl = {0927.42001}, language = {en}, url = {http://dml.mathdoc.fr/item/01248234} }
Nessel, R.J.; Röpsch, C. On the comparison of trigonometric convolution operators with their discrete analogues for Riemann integrable functions.. Journal of Inequalities and Applications [electronic only], Tome 2 (1998) pp. 297-306. doi : 10.1155/S1025583498000198. http://gdmltest.u-ga.fr/item/01248234/