KUZHEL, S. A. On elements of scattering theory for abstract Shrödinger equation. Lax-Phillips approach. Methods of Functional Analysis and Topology, [S. l.], v. 7, n. 2, p. 13–21, 2001. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/146. Acesso em: 17 dec. 2025.