A solution of the problem on eigen oscillations of a nonclosed singularly perturbed rotation shell. Neliniini Kolyvannya, [S. l.], v. 8, n. 3, p. 415–432, 2005. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/364. Acesso em: 22 jan. 2026.