Вas M. O.; LAVRENYUK, S. P. On the uniqueness of a solution of the fourier problem for a system of sobolev-gal’pern type. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 1, p. 124–128, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5370. Acesso em: 6 dec. 2025.