RESEARCH OF THE NATURE OF DESTRUCTION OF 20GL STEEL SAMPLES FROM A WEDGE AND A SIDE FRAME AFTER VOLUMETRIC SURFACE HARDENING. E Conference Zone, [S. l.], p. 16–20, 2022. Disponível em: https://econferencezone.org/index.php/ecz/article/view/1134. Acesso em: 15 sep. 2025.