[1]
S. A. Kuzhel', “Abstract Lax-Phillips scattering scheme for second-order operator-differential equations”, Ukr. Mat. Zhurn., vol. 48, no. 4, pp. 452–463, Apr. 1996, Accessed: Feb. 17, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5310