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Wang Youyu; Cui Yujiao; Li Yannan: Lyapunov-type inequalities for (m+1)th order half-linear differential equations with anti-periodic boundary conditions. (2015)
Wang Youyu; Tang Yantao; Zhao Meng: Multiple positive solutions for a nonlinear 2n-th order m-point boundary value problems. (2010)
Wang Youyu; Ge Weigao; Cheng Sui Sun: Positive solutions for a multi-point eigenvalue problem involving the one dimensional p-Laplacian. (2009)