ANTYPKO, I. I.; SEMENOVA, N. O. Boundary-value problem in an infinite layer. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 47, n. 3, p. 400–402, 1995. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5429. Acesso em: 5 dec. 2025.