@article{GDZPPN002475014,
title = {Integrability Theorems of Certain Trigonometric Series with Quasi-monotone Coefficients.},
journal = {Monatshefte f\"ur Mathematik},
volume = {69},
year = {1965},
pages = {441-450},
zbl = {0158.05802},
url = {http://dml.mathdoc.fr/item/GDZPPN002475014}
}
Yong, Chi-Hsing. Integrability Theorems of Certain Trigonometric Series with Quasi-monotone Coefficients.. Monatshefte für Mathematik, Tome 69 (1965) pp. 441-450. http://gdmltest.u-ga.fr/item/GDZPPN002475014/