@article{1077490209, author = {Quade, E. S.}, title = {Trigonometric approximation in the mean}, journal = {Duke Math. J.}, volume = {3}, number = {1}, year = {1937}, pages = { 529-543}, language = {en}, url = {http://dml.mathdoc.fr/item/1077490209} }
Quade, E. S. Trigonometric approximation in the mean. Duke Math. J., Tome 3 (1937) no. 1, pp. 529-543. http://gdmltest.u-ga.fr/item/1077490209/