Turaev Tirkash Turaevich, Madaminov Bakhrom Mirodilovich, and Tojiev Bobur Abdulhakim O‘g‘li. “Physical Foundations Structural - Formation, Surface Layer Of Parts”. The American Journal of Engineering and Technology, vol. 2, no. 09, Sept. 2020, pp. 71-76, doi:10.37547/tajet/Volume02Issue09-13.