Amr M. S. Mahdy and Ali A. A. El-dahdouh 2017. Second kind shifted Chebyshev polynomials and power series method for solving multi-order non-linear fractional differential equations. Malaya Journal of Matematik. 5, 01 (Jan. 2017), 19–28. DOI:https://doi.org/10.26637/mjm501/003.