GAO Hong-ya , ZHANG Hua , TONG Yu-xia . Zeros for the Gradients of Very Weak Solutions of a Class of Elliptic Equation of Divergence Type[J]. Journal of Hebei University(Natural Science Edition), 2005 , 25(1) : 9 -12 . DOI: 10.3969/j.issn.1000-1565.2005.01.003

[1] 高红亚. A-调和方程很弱解的正则性 [J]. 数学学报 2001.doi:10.3321/j.issn:0583-1431.2001.04.005
[2] 高红亚, 王岷, 赵洪亮. 一类拟线性椭圆型方程很弱解的局部正则性 [J]. 应用数学学报 2003.doi:10.3321/j.issn:0254-3079.2003.02.003
[3] 高红亚, 叶玉全, 谢素英. ON VERY WEAK SOLUTIONS OF A-HARMONIC EQUATION WITH VERY WEAK BOUNDARY VALUES [J]. 数学物理学报(英文版) 2002.
[4] 高红亚, 李子植. 一类散度型椭圆方程的很弱解 [J]. 应用数学 2004.doi:10.3969/j.issn.1001-9847.2004.04.002
[5] IWANIE C T, SBORDONE C. Weak minima of variational integrals [J]. Journal of fur die Reine und Angewandte Mathematik 1994, 454.
[6] IWANIEC T, MARTIN G. Geometric function theory and nonlinear analysis [M]. 香港:牛津大学出版社 2001.
[7] HEINONEN J, KILPELAINEN T, MARTIO O. nonlinear potential theory of degenerate elliptic equations [M]. 香港:牛津大学出版社 1993.
[8] RESHETNYAK YU G. Space mappings with bounded distortion [M]. Providence:Amer Math Soc 1989.
[9] GIAQUINTA M. Multiple integrals in the calculus of variations and nonlinear elliptic systems [M]. Princeton: Princeton University Press 1983.
[10] IWANIED T. P-harmonic tensors and quasiregular mappings [J]. Annuals of Mathematics 1992, 136.
[11] IWANIEC T, MARTIN G. Quasiregular mappings in even dimensions [J]. Acta Mathematica 1993, 170.