Sergaliyev, A. S. and Khajiyeva, L. A. (2015) “Modelling of Nonlinear Torsional-Flexural Vibrations of Drill Strings”, International Journal of Mathematics and Physics, 6(2), pp. 41–48. Available at: https://ijmph.kaznu.kz/index.php/kaznu/article/view/147 (Accessed: 2 May 2024).