@Article{Bitsadze1984, author="A. V. Bitsadze", title="On the theory of nonlocal boundary value problems", journal="Soviet Math. Dokl. ", year="1984", pages="8–10. ", volume="30" } @Article{Bitsadze1985, author="A. V. Bitsadze, A. A. Samarskii", title="On a class of conditionally solvable nonlocal boundary value problems for harmonic functions", journal="Soviet Math. Dokl. ", year="1985", pages=" 91–94. ", volume="31" } @Article{Il’in1987, author="V. A. Il’in, E. I. Moiseev", title="Nonlocal boundary value problems of the second kind for a Sturm- CLiouville operator", journal="J. Differential Equations ", year="1987", pages="979–987.", volume="23" } @Article{Gupta 1992, author="C. P. Gupta ", title="Solvability of a three-point nonlinear boundary value problem for a second order ordinary differential equation", journal="J. Math. Anal. Appl. ", year="1992", pages=" 540–551. ", volume="168" } @Article{Zhang2008, author="F. Zhang", title="Multiple positive solutions for nonlinear singular third order boundary value problem in abstract spaces", journal="J. Nonlinear. Sci. Appl.", year="2008", pages="36–44. ", volume="1(1)" } @Article{Wu2008, author="X. R. Wu, F. Wang", title="Nonlinear solutions of singular second order three-point boundary value problem at resonance", journal="J. Nonlinear. Sci. Appl.", year="2008", pages="49–55. ", volume="1(1)" } @Article{Pang2010, author=" Y. Y. Pang, Z. B. Bai", title="Existence and multiplicity of positive solutions for p-Laplacian boundary value problem on time scales", journal=" J. Nonlinear. Sci. Appl. ", year="2010", pages="32–38.", volume="3(1)" } @Article{Guezane-Lakoud2011, author="A. Guezane-Lakoud, S. Kelaiaia", title="Solvability of a nonlinear boundary value problem", journal="J. Nonlinear. Sci. Appl. ", year="2011", pages="247–261. ", volume="4(4)" } @Article{Wang2011, author="F. Wang, Y. Cui, F. Zhang", title="Existence of nonnegative solutions for second order m-point boundary value problems at resonance", journal="Appl. Math. Comput. ", year="2011", pages="4849–4855. ", volume="217" } @Article{Zhang2004, author="G. Zhang, J. Sun", title="Positive solutions of m-point boundary value problems", journal="J. Math. Anal. Appl. ", year="2004", pages="406–418. ", volume="291" } @Article{Zhang2006, author=" G. Zhang, J. Sun", title="Multiple positive solutions of singular second-orderm-point boundary value problems", journal="J. Math. Anal. Appl. ", year="2006", pages="442–447.", volume="317" } @Article{Cui2007, author="Y. Cui, Y. Zou", title="Nontrivial solutions of singular superlinear m-point boundary value problems", journal="Appl. Math.Comp. ", year="2007", pages="1256–1264. ", volume="187" } @Article{Han2007, author="X. Han", title="Positive solutions for a three-point boundary value problem", journal="Nonlinear Anal.", year="2007", pages="679–688.", volume="66 (3)" } @Article{Truong2008, author="L. X. Truong, L. T. P. Ngoc, N. T. Long", title="Positive solutions for an m-point boundary value problem", journal="Electron. J. Differential Eqns.", year="2008", pages="1–11. ", volume="111" } @Article{Leggett1979, author="R. W. Leggett, L. R. Williams", title="Multiple positive fixed points of nonlinear operators on ordered Banach spaces", journal="Indiana University Math. J.", year="1979", pages="673–688.", volume="28" }