中国科学院数学与系统科学研究院期刊网
Hölder Continuity and Differentiability Almost Everywhere of (K1,K2)-Quasiregular Mappings
Hong Ya GAO, Chao LIU, Jun Wei LI
Acta Mathematica Sinica, Chinese Series . 2012, (4): 721 -726 .  DOI: 10.12386/A2012sxxb0069