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• H. Amann, Fixed point equations and nonlinear eigenvalue problems in ordered Banach spaces, SIAM Review, 18 (1976), 620-709.
• J. Henderson, R. Luca, Existence and multiplicity for positive solutions of a second order multi-point discrete boundary value problem, J. Diğerence Equ. Appl., 19 (3) (2013), 418-438.
• J. Henderson, R. Luca, On a multi-point discrete boundary value problem, J. Diğerence Equ. Appl., 19 (4) (2013), 690-699.
• J. Henderson, R. Luca, Existence of positive solutions for a system of second-order multi-point discrete boundary value problems, J. Diğerence Equ. Appl., 19 (11) (2013), 1889-1906.
• J. Henderson, R. Luca, On a second-order nonlinear discrete multi-point eigenvalue problem, J. Diğerence Equ. Appl., 20 (7) (2014), 1005-1018.
• Y. Zhou, Y. Xu, Positive solutions of three-point boundary value problems for systems of nonlinear second order ordinary diğ erential equations, J. Math. Anal. Appl., 320 (2006), 578-590.
• Current address : Johnny Henderson :Baylor University,Department of Mathematics
• Waco, Texas, 76798-7328 USA Current address : Rodica Luca :Gh. Asachi Technical University,Department of Mathe
• matics, Iasi 700506, Romania Current address : Alexandru Tudorache :Gh. Asachi Technical University Faculty of Com