De La Sen, Manuel, Vahid Hedayati, Yasser Gholizade Gholizade Atani, and Shahram Rezapour. 2017. “The Existence and Numerical Solution for a K-Dimensional System of Multi-Term Fractional Integro-Differential Equations”. Nonlinear Analysis: Modelling and Control 22 (2): 188-209. https://doi.org/10.15388/NA.2017.2.4.