“ADAPTIVE NON-LINEAR VOLTAGE CONTROLLER BASED MULTIVARIABLE SLIDING MODE EXTREMUM SEEKING APPROACH APPLIED TO MULTI-MACHINE POWER SYSTEM”. REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE 67, no. 1 (March 12, 2022): 65–72. Accessed May 6, 2024. https://journal.iem.pub.ro/rrst-ee/article/view/41.