ALEXANDROVICH, Iryna; ADZHUBEY, Larisa; RYZHENKO, Andrii; LYASHKO, Viktor. Robin’s problem for a fourth-order hyperbolic equation. Bulletin of Taras Shevchenko National University of Kyiv. Physics and Mathematics, [S. l.], v. 82, n. 1, p. 101–105, 2026. DOI: 10.17721/1812-5409.2026/1.12. Disponível em: https://bphm.knu.ua/bphm/article/view/621. Acesso em: 10 oct. 2026.