@Article{Amann 1976, author="H. Amann ", title="Fixed point equations and nonlinear eigenvalue problems in ordered Banach spaces", journal=" SIAM. Rev.", year="1976", pages=" 620–709. ", volume="18" } @Article{Cabada2013, author=" A. Cabada, G. Infante, F. A. F. Tojo", title="Nontrivial solutions of Hammerstein integral equations with reflections", journal="Bound. Value Probl.", year="2013", pages=" 22 pages. ", volume="2013" } @Article{Cabada2006, author="A. Cabada, F. Minhós, A. I. Santos", title="Solvability for a third order discontinuous fully equation with nonlinear functional boundary conditions", journal=" J. Math. Anal. Appl.", year="2006", pages=" 735–748. ", volume="322" } @Article{Graef2017, author=" J. Graef, L. Kong, F. Minhós", title="Generalized Hammerstein equations and applications", journal=" Results Math.", year="2017", pages="369–383. ", volume="72" } @Book{Granas2003, author="A. Granas, J. Dugundji", title="Fixed Point Theory", year="2003", publisher="Springer", address="New York" } @Book{Greguš1987, author=" M. Greguš", title="Third Order Linear Differential Equations", year="1987", publisher="Mathematics and its Applications, D. Reidel Publishing Co.", address="Dordrecht" } @Book{Guo1988, author="D. Guo, V. Lakshmikantham", title="Nonlinear Problems in Abstract Cones", year="1988", publisher=" Academic Press", address="New York" } @Article{Guo2008, author=" L. Guo, J. Sun, Y. Zhao", title="Existence of positive solutions for nonlinear third-order three-point boundary value problems", journal="Nonlinear Anal.", year="2008", pages=" 3151–3158. ", volume="68" } @Article{Infante2010, author="G. Infante, P. Pietramala", title="A third order boundary value problem subject to nonlinear boundary conditions", journal=" Math. Bohem.", year="2010", pages=" 113–121. ", volume="135" } @Article{Infante2016, author="G. Infante, P. Pietramala, F. A. F. Tojo", title="Nontrivial solutions of local and nonlocal Neumann boundary-value problems", journal="Proc. Royal Soc. Edinburgh", year="2016", pages="337–369. ", volume="146" } @Article{Infante2003, author=" G. Infante, J. R. L. Webb ", title="Three point boundary value problems with solutions that change sign", journal="J. Integral Equations Appl.", year="2003", pages="37–57.", volume="15" } @Article{Liu2011, author="Y. Liu, Z. Weiguo, L. Xiping, S. Chunfang, C. Hua ", title="Positive solutions for a nonlinear third order multipoint boundary value problem", journal=" Pac. J. Math.", year="2011", pages="177–188. ", volume="249" } @Article{Minhós2017, author=" F. Minhós, R. Sousa ", title="On the solvability of third-order three point systems of differential equations with dependence on the first derivative", journal="Bull. Braz. Math. Soc.", year="2017", pages=" 485–503.", volume="48" }