Eshboboev Sardor Nurbobo ugli, Rakhmatov Sirozhiddin Eshmakhmadovich, Nurolliev Novruz Shoymardon ugli, and Inatillayeva Khusnora Askar kizi. 2022. “RESEARCH OF THE NATURE OF DESTRUCTION OF 20GL STEEL SAMPLES FROM A WEDGE AND A SIDE FRAME AFTER VOLUMETRIC SURFACE HARDENING”. E Conference Zone, June, 16-20. http://econferencezone.org/index.php/ecz/article/view/1134.