Study of the friction of the brake shoe of a freight carSardor Inagamov, Shukhrat Djabbarov, Bakhrom Abdullaev, Yadgor Ruzmetov, Kamoliddin Inoyatov and Yahyo HurmatovE3S Web of Conf., 401 (2023) 05036DOI: https://doi.org/10.1051/e3sconf/202340105036