20210207014000.0 2709-9547 2709-9547 https://sabapub.com/index.php/jfcns Journal of fractional calculus and nonlinear systems Journal of fractional calculus and nonlinear systems. 2709-9547 Journal of fractional calculus and nonlinear systems 2709-9547 Journal of fractional calculus and nonlinear systems. Kuwait 2709-9547