中国科学院数学与系统科学研究院期刊网
ON THE SUMMABILITY FOR POSITIVE INDICES OF THE FOURIER SERIES OF A FUNCTION WITH AN INFINITE LIMIT
周懷衡
Acta Mathematica Sinica, Chinese Series . 1955, (1): 81 -89 .  DOI: 10.12386/A1955sxxb0005