Brown K J，ZhangY P.TheNeharimanifold for a semilinear elliptic equation with a signˉchangingweight function[J].JDifferˉentialEquations，2003，193:481ˉ499.
[6]
Brown K J.The Neharimanifold for a semilinear elliptic equation[J].Calculus ofVariations and Partial Differential Equations，2005，22:483ˉ494.
[7]
Hess P，KatoT.On some linear and nonlinear eigenvalue problemswith an indefiniteweight function[J].Commun PartialDifferˉentialEquations，1980，5:999ˉ1030.
[8]
Dr bek P，Kufner A，Nicolosi F.Quasilinear Elliptic Equations with Degenerations and Singularities[M].New York:W alter deGruyter，1997.
[9]
Ma L.Bifurcation in Nirenberg’s problem[J].C R Acad Sci Paris，Ser I，1998，326:583ˉ588.
[10]
Bao JG.Positive solution for semilinear elliptic equation on general domain[J].NonlinearAnalysis，2003，53:1179ˉ1191.
