Campos-Salazar, José M., Joan Nicolás-Apruzzese, and Gabriel García-Rojas. “Modeling, Control, and Simulation of a Common-Emitter Switched Amplifier With a Voltage-Variable Gain”. Journal of Electronics and Electrical Engineering 4, no. 1 (February 20, 2025): 222–233. Accessed December 6, 2025. https://ojs.wiserpub.com/index.php/JEEE/article/view/6214.