TROTSENKO , V. A.; TROTSENKO , Yu. V. Structure of integrals of equations of oscillations of a conical shell closed at a vertex. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 10, p. 1414–1422, 2021. DOI: 10.37863/umzh.v73i10.6702. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6702. Acesso em: 5 dec. 2025.