TYMOSHCHUK O. STUDY OF THE ACCURACY OF IMPROVED METHODS OF CALCULATING THE TIGHTNESS PARAMETERS OF OIL-FREE PISTON SEALS. Herald of Khmelnytskyi National University. Technical sciences [Internet]. 2023 Dec. 31 [cited 2026 Jan. 26];329(6):373-9. Available from: https://heraldts.khmnu.edu.ua/index.php/heraldts/article/view/434