Trotsenko , V. A., and Yu. V. Trotsenko. “Structure of Integrals of Equations of Oscillations of a Conical Shell Closed at a Vertex”. Ukrains’kyi Matematychnyi Zhurnal 73, no. 10 (October 17, 2021): 1414-1422. Accessed April 18, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/6702.