@article{GDZPPN002301121, title = {Coefficient Properties of Certain Fourier Series.}, journal = {Mathematische Annalen}, volume = {180}, year = {1969}, pages = {242-254}, zbl = {0164.07302}, url = {http://dml.mathdoc.fr/item/GDZPPN002301121} }
SIDDIQI, J.A. Coefficient Properties of Certain Fourier Series.. Mathematische Annalen, Tome 180 (1969) pp. 242-254. http://gdmltest.u-ga.fr/item/GDZPPN002301121/