Hyperbolic boundary-value problems of mathematical physics in a semibounded piecewise homogeneous wedge-shaped solid cylinder. Neliniini Kolyvannya, [S. l.], v. 29, n. 1, p. 3–17, 2026. DOI: 10.3842/nosc.v29i1.1540. Disponível em: https://nosc.imath.kiev.ua/index.php/nosc/article/view/1215. Acesso em: 14 sep. 2026.