中国科学院数学与系统科学研究院期刊网
A GENERALIZATION OF BUNIAKOWSKY'S INEQUALITY WITH APPLICATIONS TO THE THEORY OF INTEGRAL EQUATIONS AND HILBERT SPACES
张世勋
Acta Mathematica Sinica, Chinese Series . 1957, (2): 200 -228 .  DOI: 10.12386/A1957sxxb0014