RESEARCHES OF TIGHTNESS DEGREES OF THE OPERATED BACK-PRESSURE VALVES OF THE PROPORTIONAL ELECTROHYDRAULIC VALVE. Вісник ВПІ [Internet]. 2015 Jun. 25 [cited 2026 Nov. 15];(3):109-13. Available from: https://vpi.sprava.net/index.php/visnyk/article/view/799