B. Ahmad, S. K. Ntouyas, J. Tariboon, and A. Alsaedi, “A Study of Nonlinear Fractional-Order Boundary Value Problem with Nonlocal Erdelyi-Kober and Generalized Riemann-Liouville Type Integral Boundary Conditions”, MMA, vol. 22, no. 2, pp. 121-139, Mar. 2017.