Nurizinova М, Skakov М, Çoruh A, Ramankulov S, Nurizinov M. The development of digital educational materials on tribology and their application in the formation of the professional competence of future physics teachers. ijirss [Internet]. 2024 Aug. 23 [cited 2024 Aug. 31];7(4):1600-13. Available from: http://ijirss.com/index.php/ijirss/article/view/3459