Abdullaev, O. Kh. “On the Problem for the Mixed-Type Degenerate Equation With Caputo and Erdelyi – Kober Operators of Fractional Order”. Ukrains’kyi Matematychnyi Zhurnal 71, no. 6 (June 25, 2019): 723–738. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/1471.