1.张炳根,杨博。一类非线性奇异边值问题的正解。科学通报,1994,39:1065-1069
2.Wang H.On the existence of positive solutions for semilinear elliptic equations in the annulus.J Diff Eqns,1994,109:1-7
3.Agarwal R p ,O'Regan D.Singular boundary value problems for superlinear second order ordinary and delay differential equations,J Diff Eqns,1996,130:333-355
4.Dalamasso R.Positive solutions of singular boundary value problems.Nonlinear Analysis,1996,27:645-652
5.Agarwal R P,O'Regan D.Nonlinear supperlinear singular and nonsingular second order boundary value problems.J Diff Eqns ,1988,143:60-95
6.Krasnosel'skii M A,Zabreiko P P.Geometrical methods of nonlinear analysisi.Berlin Heidelbreg:Springer-Verlag,1984 |