TY - JOUR AU - Amirahmad Khajehnasiri AU - M. Afshar Kermani AU - Rezza Ezzati TI - Fractional Order Operational Matrix Method for Solving Two-Dimensional Nonlinear Fractional Volterra Integro-Differential Equations JO - Kragujevac Journal of Mathematics PY - 2021 SP - 571 VL - 45 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KJM_2021_45_4_a4/ LA - en ID - KJM_2021_45_4_a4 ER -