Chen, Gang, Zhanbing Bai, and Wei Zhang. “Existence and Stability Results for Triple Systems of Fractional Sturm–Liouville–Langevin Equations With Cyclic Boundary Conditions”. Nonlinear Analysis: Modelling and Control 31 (January 5, 2026): 1–26. Accessed January 13, 2026. https://www.journals.vu.lt/nonlinear-analysis/article/view/44744.