On Multiple Positive Solutions for Singular Fractional Boundary Value Problems with Riemann-Stieltjes Integrals - Gu, Lufeng; Zhong, Qiuyan; Shao, Zhuyan (Journal of function spaces, 2023)
Keywords: Banach spaces; Boundary conditions; Boundary value problems; Calculus; Differential equations; Fractional calculus; Integrals; Nonlinear systems; Nonlinearity