References
- Gupta , CP . 1998 . Existence and uniqueness results for the bending of an beam equation at resonance . J. Math. Anal. Appl. , 135 : 208 – 225 .
- Yang , Y . 1988 . Fourth-order two-point boundary value problems . Appliable Analysis , 104 : 175 – 180 .
- Gupta , CP . 1988 . Existence and uniqueness theorems for the bending of an elastic beam equation . Applicable Analysis , 26 : 289 – 304 .
- del Pino , MA and Manasevich , RF . 1991 . Existence for a fourth-order boundary value problem under a two-parameter nonresonance condition . Proc. Amer. Math. Soc. , 112 : 81 – 86 .
- Ma , R and Wang , H . 1995 . On the existence of positive solutions of fourth-order ordinary differential equations . Applicable Analysis , 59 : 225 – 231 .
- Ma , R , Zhang , J and Fu , S . 1997 . The method of lower and upper solutions for fourth-order two-point boundary value problems . J. Math. Anal. Appl. , 215 : 415 – 422 .
- Yao Q 1999 Existence of positive solutions of BVP for u (4)(t) − λ h(t)f(u(t)) = 0 Chinese Annals of Math. 20A 575 578 (in Chinese)
- Yao , Q . 2001 . Several existence theorems for positive radial solutions to a semilinear elliptic BVP . Northeast. Math. J. , 17 : 169 – 174 .
- Yao , Q . 2001 . The singular second-order nonlinear eigenvalue problem with infinitely many positive solutions . Annals of Diff. Eqns. , 17 : 268 – 274 .
- Yao Q 2001 Existence and multiplicity of positive radial solutions for a class of nonlinear elliptic equations in annular domains Chinese Annals of Math. 22A 633 638 (in Chinese)
- Yao , Q and Ma , Q . 2002 . Existence of positive radial solutions for some semilinear elliptic equations in annulus . Applied Math. & Mech. , 23 : 1452 – 1457 .
- Yao , Q . 2002 . The positive solution of classical Gelfand model with coefficient that change sign . Applied Math. & Mech. , 23 : 1458 – 1463 .
- Yao , Q . 2003 . Existence and multiplicity of positive radial solutions for a semilinear elliptic equation with change of sign . Applicable Analysis , 80 : 65 – 77 .
- Yao , Q . 2003 . On the positive solutions of Lidstone boundary value problems . Applied Math. & Comput. , 137 : 477 – 485 .
- Zauderer E 1983 Partial Differential Equations of Applied Mathematics, Wiley Interscience New York
- Krasnosel'skii MA 1964 Positive Solutions of Operator Equations, Noordhoff Groningen Netherland