Bakytzhan, Salimov, Altynbek Kaukarov, Murat Kuanyshev, Akhmet Murzagaliev, Kanat Narikov, and Bekbolat Shakeshev. 2015. “The Improvement of Friction Bearing Manufacturing Technology by Using Copper Alloy”. Advanced Technologies and Materials 40 (2):13-22. http://sp.ftn.uns.ac.rs/index.php/atm/article/view/JTP.2015.40.2.2.