I. V. Poyarkov, “OSCILLATING INSTABILITY IN A FINITE SIZE CYLINDRICAL CHANNEL”, Rec.Contr.Phys., vol. 37, no. 2, pp. 7–14, Jun. 2011, Accessed: Sep. 10, 2026. Available: https://bph.kaznu.kz/index.php/zhuzhu/article/view/130