Tribological Characteristics of Cast 120X15, 120X15Ю and Standard 20X13 Steels in Conditions of Boundary Friction: Processy litʹâ, 2019, Tom 135, №3, p.59-66. (2019). Casting Processes, 135(3), 59-66. https://plit-periodical.org.ua/index.php/plit/article/view/135