Hu, Wenhao, Zhaocai Hao, and Martin Bohner. “Uniqueness of Solutions for Boundary Value Problems for Nonlinear Fractional Differential Equations”. Topological Methods in Nonlinear Analysis 65, no. 2 (June 14, 2025): 459–472. Accessed February 11, 2026. https://apcz.umk.pl/TMNA/article/view/62297.