Integrability Theorems of Certain Trigonometric Series with Quasi-monotone Coefficients. Chi-Hsing Yong — 1965 Monatshefte für Mathematik
On the asymptotic behaviours of cosine series with monotone coefficients. Chi-Hsing Yong — 1969 Publications de l'Institut Mathématique [Elektronische Ressource]
Integrabilty Theorems of Powers of Trigonometric Series with Quasi-Monotone Coefficients. Chi-Hsing Yong — 1966 Mathematische Zeitschrift
On The Asymptotic Behaviours Of Cosine Series With Monotone Coefficients Chi-Hsing Yong — 1969 Publications de l'Institut Mathématique