@article{1178243618,
author = {Butzer, P. L. and G\"orlich, E.},
title = {Zur Charakterisierung von Saturationsklassen in der Theorie der Fourierreihen},
journal = {Tohoku Math. J. (2)},
volume = {17},
number = {4},
year = {1965},
pages = { 29-54},
language = {de},
url = {http://dml.mathdoc.fr/item/1178243618}
}
Butzer, P. L.; Görlich, E. Zur Charakterisierung von Saturationsklassen in der Theorie der Fourierreihen. Tohoku Math. J. (2), Tome 17 (1965) no. 4, pp. 29-54. http://gdmltest.u-ga.fr/item/1178243618/