N. Šulčius and V. A. Geleževičius, “Investigation of the Dynamical Quality of the Electromechanical Servo Systems using Variable Structure Controllers”, ELEKTRON ELEKTROTECH, vol. 63, no. 7, pp. 36–40, Aug. 2005, Accessed: Jan. 22, 2026. [Online]. Available: https://eejournal.ktu.lt/index.php/elt/article/view/10487