Abdullaev, O. Kh. 2019. “On the Problem for the Mixed-Type Degenerate Equation With Caputo and Erdelyi – Kober Operators of Fractional Order”. Ukrains’kyi Matematychnyi Zhurnal 71 (6), 723-38. https://umj.imath.kiev.ua/index.php/umj/article/view/1471.