Koval’chukP. S., KrukL. A., and KubenkoV. D. 2007. “Application of Asymptotic Methods to the Investigation of One-Frequency Nonlinear Oscillations of Cylindrical Shells Interacting With Moving Fluid”. Ukrains’kyi Matematychnyi Zhurnal 59 (4), 476–487. https://umj.imath.kiev.ua/index.php/umj/article/view/3322.