B. N.Abood, E. A.Hussain, و M. T. Wazi, "Generalized Differential Transformation Method for Solving system of Non linear Volterra integro-differential equations of fractional order", eduj, م 1, عدد 25, ص 523–550, يناير 2018, doi: 10.31185/eduj.Vol1.Iss25.139.