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Agarwal, Ravi P.; Wong, Patricia J. Y.: Positive solutions of complementary Lidstone boundary value problems. Electronic journal of qualitative theory of differential equations 60. pp. 1-20. (2012)
Liu, Yuji; Wong, Patricia J. Y.: Triple positive solutions of BVP for second order ODE with one dimensional Laplacian on the half line. Electronic journal of qualitative theory of differential equations 23. pp. 1-28. (2012)
Wei, Yuming; Wong, Patricia J. Y.: Triple positive solutions to initial-boundary value problems of nonlinear delay differential equations. Electronic journal of qualitative theory of differential equations 14. pp. 1-11. (2009)