中国科学院数学与系统科学研究院期刊网
Regularity of very Weak Solutions for a Class of Nonlinear Elliptic Systems
Shen Zhou ZHENG,Ai Nong FANG
Acta Mathematica Sinica, Chinese Series . 1999, (1): 119 -121 .  DOI: 10.12386/A1999sxxb0019