中国科学院数学与系统科学研究院期刊网
Convolution-Type Calder\'{o}n-Zygmund Operators and Approximation
Zhan Ying YANGQi Xiang YANG
Acta Mathematica Sinica, Chinese Series . 2008, (6): 1061 -107 .  DOI: 10.12386/A2008sxxb0123