PIVOVARCHIK, V. N. Necessary conditions for stability of elastic pipe conveying liquid. Methods of Functional Analysis and Topology, [S. l.], v. 11, n. 3, p. 270–274, 2005. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/285. Acesso em: 16 dec. 2025.