“RESEARCHES OF TIGHTNESS DEGREES OF THE OPERATED BACK-PRESSURE VALVES OF THE PROPORTIONAL ELECTROHYDRAULIC VALVE”. Visnyk of Vinnytsia Politechnical Institute, no. 3 (June 25, 2015): 109–113. Accessed November 15, 2026. https://vpi.sprava.net/index.php/visnyk/article/view/799.