中国科学院数学与系统科学研究院期刊网
Sign-Changing and Multiple Solutions Theorems for Semilinear Elliptic Boundary Value Problems with Jumping Nonlinearities
Shu Jie LI,Zhi Tao ZHANG
Acta Mathematica Sinica, Chinese Series . 2001, (3): 507 -516 .  DOI: 10.12386/A2001sxxb0066