Hernández-Verón, Miguel A., Sukhjit Singh, Eulalia Martínez, and Nisha Yadav. “A Fixed-Point Type Result for Some Non-Differentiable Fredholm Integral Equations”. Mathematical Modelling and Analysis 29, no. 1 (February 23, 2024): 161–177. Accessed November 22, 2024. https://jest.vgtu.lt/index.php/MMA/article/view/18338.