DAULETBEKULY, O.; BAIJUMANOV, K. D. Methods of increase of wear resistance and resource of operation of soil pumps. International Journal of Mathematics and Physics, [S. l.], v. 6, n. 1, p. 4–7, 2015. Disponível em: https://ijmph.kaznu.kz/index.php/kaznu/article/view/109. Acesso em: 7 may. 2024.