References
- Atkinson F, Everitt F, Ong K. On the m-coefficient of Weyl for a differential equation with an indefinite weight function. Proc Lond Math Soc. 1974;29(3):368–384.
- Bandle C, Pozio MA, Tesei A. Existence and uniqueness of solutions of nonlinear Neumann problems. Math Z. 1988;199:257–278.
- Bonheure D, Noris B, Weth T. Increasing radial solutions for Neumann problems without growth restrictions. Ann Inst H Poincaré Anal Non Linéaire. 2012;29:573–588.
- Bonheure D, Serra E, Tilli P. Radial positive solutions of elliptic systems with Neumann boundary conditions. J Funct Anal. 2013;265:375–398.
- Boscaggin A, Feltrin G, Zanolin F. Positive solutions for super-sublinear indefinite problems: High multiplicity results via coincidence degree. Trans Amer Math Soc. 2018;370(2):791–845.
- Brown K, Lin S. On the existence of positive eigenfunctions for an eigenvalue problem with indefinite weight function. J Math Anal Appl. 1980;75:112–120.
- Chen T, Ma R. Three positive solutions of N-dimensional p-Laplacian with indefinite weight. Electron J Qual Theory Differ Equ. 2019;2019(19):1–14.
- Chen G, Sovrano E. Three positive solutions to an indefinite Neumann problem: a shooting method. Nonlinear Anal. 2018;166:87–101.
- Fleming W. A selection-migration model in population genetics. J Math Biol. 1975;2:219–234.
- Kazdan L, Warner F. Remarks on some quasilinear elliptic equations. Commun Pure Appl Math. 1975;28:567–597.
- Lee YH, Sim I. Global bifurcation phenomena for singular one-dimensional p-Laplacian. J Differ Equ. 2006;229:229–256.
- Ma R, Chen T, Lu Y. On the Bonheure-Noris-Weth conjecture in the case of linearly bounded nonlinearities. Discrete Contin Dyn Syst Ser B. 2016;21:2649–2662.
- Ma R, Chen T, Wang H. Nonconstant radial positive solutions of elliptic systems with Neumann boundary conditions. J Math Anal Appl. 2016;443:542–565.
- Ma R, Gao H, Chen T. Radial positive solutions for Neumann problems without growth restrictions. Complex Var Elliptic Equ. 2017;62(6):848–861.
- Del Pino M, Manásevich R. Global bifurcation from the eigenvalues of the p-Laplacian. J. Differ Equ. 1991;92:226–251.
- Saut J, Scheurer B. Remarks on a nonlinear equation arising in population genetics. Commun Partial Differ Equ. 1978;3:907–931.
- Senn S. On a nonlinear elliptic eigenvalue problem with Neumann boundary conditions with an application to population genetics. Commun Partial Differ Equ. 1983;8(11):1199–1228.
- Senn S, Hess P. On positive solutions of a linear elliptic eigenvalue problem with Neumann boundary conditions. Math Ann. 1982;258:459–470.
- Serra E, Tilli P. Monotonicity constraints and supercritical Neumann problems. Ann Inst H Poincaré Anal Non Linéaire. 2011;28:63–74.
- Sim I, Tanaka S. Three positive solutions for one-dimensional p-Laplacian problem with sign-changing weight. Appl Math Lett. 2015;49:42–50.
- Zanolin F, Sovrano E. Indefinite weight nonlinear problems with Neumann boundary conditions. J Math Anal Appl. 2017;452:126–147.
- Walter WOrdinary differential equations, Translated from the sixth German (1996) edition by Russell Thompson. Graduate Texts in Mathematics 182. Springer-Verlag, New York, 1998.