Sagitov, A., K. Sherov, T. Nasad, G. Abdugaliyeva, and A. Okimbayeva. “Calculation of Multi-Blade Rotary-Friction Tool Shaft for Strength”. Bulletin of L.N. Gumilyov Eurasian National University Technical Science and Technology Series 144, no. 3 (September 30, 2023): 8–19. Accessed May 14, 2024. https://bultech.enu.kz/index.php/main/article/view/481.