NIGALATIY, V.D. Investigation of the influence of chemical composition on the results of acoustic measurements of the strength properties of materials. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 79, n. 3, p. 81–86, 2015. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/52. Acesso em: 10 jul. 2025.