M. M. Mansurov, and W. Y. Akbarov. “SELF -OSCILLATIONS OF A LINEAR VISCOELASTIC CANTILEVER ROD”. Galaxy International Interdisciplinary Research Journal, vol. 10, no. 12, Dec. 2022, pp. 252-8, https://internationaljournals.co.in/index.php/giirj/article/view/3024.