“THE IMPROVEMENT MADE BY THE NONLINEAR PROPORTIONAL INTEGRAL CONTROLLER COMPARED TO THE VARIABLE GAIN PROPORTIONAL INTEGRAL CONTROLLER: n/a” (2023) REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE, 68(2), pp. 158–163. doi:10.59277/RRST-EE.2023.68.2.7.