Nagy AL. Friction and Wear of the Piston Ring – Cylinder Liner System with Artificially Aged Ultra-low Viscosity Engine Oils. Period. Polytech. Transp. Eng. [Internet]. 2024 Jan. 1 [cited 2024 May 19];52(2):190-8. Available from: https://www.pp.bme.hu/tr/article/view/22918