中国科学院数学与系统科学研究院期刊网
AMS
Sign-Changing and Multiple Solutions Theorems for Semilinear Elliptic Boundary Value Problems with Jumping Nonlinearities
Shujie Li, Zhitao Zhang
Acta Mathematica Sinica . 2000, (1): 113 -122 .  DOI: 10.1007/s101149900031