1. Fractional calculus definitions, approximations, and engineering applications;Elwy;Journal of Engineering and Applied Sciences,2020
2. Fractional Differential Equations: an Introduction to Fractional Derivatives, Fractional Differential Equations, to Methods of Their Solution and Some of Their Applications;Podlubny,1998
3. Current feedback operational amplifier (CFOA) based fractional order oscillators;Said,2014
4. Comparison between three approximation methods on oscillator circuits;Elwy;Microelectronics Journal,2018
5. All possible topologies of the fractional-order Wien oscillator family using different approximation techniques;Elwy;Circuits, Systems, and Signal Processing,2019