A multiplicity result for periodic solutions to higher-order ordinary differential equations via the method of upper and lower solutions. Lee, Yong-Hoon — 1998 Journal of Inequalities and Applications [electronic only]
Lyapunov inequalities for one-dimensional p -Laplacian problems with a singular weight function. Sim, Inbo; Lee, Yong-Hoon — 2010 Journal of Inequalities and Applications [electronic only]
Multiple positive solutions of a singular Emden-Fowler type problem for second-order impulsive differential systems. Lee, Eun Kyoung; Lee, Yong-Hoon — 2011 Boundary Value Problems [electronic only]
Multiplicity results of positive radial solutions for p -Laplacian problems in exterior domains. Kim, Chan-Gyun; Lee, Yong-Hoon; Sim, Inbo — 2008 Boundary Value Problems [electronic only]