KENGNE, E. On the Well-Posedness of a Two-Point Boundary-Value Problem for a System with Pseudodifferential Operators. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 57, n. 8, p. 1131 – 1136, 2005. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3671. Acesso em: 5 dec. 2025.