TYMOSHCHUK, Oleksandr. 2022. “ANALYSIS AND EVALUATION OF THE ACCURACY OF METHODS FOR CALCULATING THE DENSITY OF CHANNELS AND THE COMBINED AREA OF THE CONTACT SURFACE OF LUBRICATION-FREE PISTON SEALS”. Herald of Khmelnytskyi National University. Technical Sciences 315 (6(2): 125-31. https://doi.org/10.31891/2307-5732-2022-315-6(2)-125-131.