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Cui Yujun; Ma Wenije; Wang Xiangzhi; Su Xinwei: Uniqueness theorem of differential system with coupled integral boundary conditions. (2018)
Cui Yujun; Zou Yumei: Monotone iterative technique for (k,n−k) conjugate boundary value problems. (2015)
Cui Yujun; Sun Jingxian: On existence of positive solutions of coupled integral boundary value problems for a nonlinear singular superlinear differential system. (2012)