BOYKO, P.; LOPUSHANSKY, A.; LOPUSHANSKA, H. Inverse initial-value problem in the spaces of Bessel potentials. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 77, n. 11, p. 651–658, 2025. DOI: 10.3842/umzh.v77i11.9199. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/9199. Acesso em: 5 dec. 2025.