@article{GDZPPN002400537, title = {Fourier Coefficients of Positive Functions.}, journal = {Mathematische Zeitschrift}, volume = {99}, year = {1967}, pages = {373-379}, zbl = {0175.06303}, url = {http://dml.mathdoc.fr/item/GDZPPN002400537} }
Askey, R.; Boas, R.P. jr. Fourier Coefficients of Positive Functions.. Mathematische Zeitschrift, Tome 99 (1967) pp. 373-379. http://gdmltest.u-ga.fr/item/GDZPPN002400537/