共 3 条
[1]
Chang K.-c., 1993, Progress in Nonlinear Differential Equations and their Applications, V6
[2]
Ghergu M., 2008, Singular elliptic problems: bifurcation and asymptotic analysis, Oxford lecture series in mathematics and its applications, V37
[3]
Rabinowitz PH, 1986, MINIMAX METHODS CRIT