中国科学院数学与系统科学研究院期刊网
AMS
Existence of Sign-Changing Solutions for the p-Laplacian Equation from Linking Type Theorem
You Jun WANG, Yao Tian SHEN
Acta Mathematica Sinica . 2010, (7): 1355 -1368 .  DOI: 10.1007/s10114-010-7383-5