Baimakhan, R.B., A.R. Baimakhan, Z.M. Abdiakhmetova, A.A. Seynasinova, and G.M. Baimakhanova. “Generalization of Tsytovich Strength Conditions for Soils of Anisotropic Structure”. Bulletin of the Karaganda University. Mathematics Series 93, no. 1 (March 30, 2019): 108–114. Accessed September 2, 2025. http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/315.