MITROPOLSKIY, Yu. A.; SOKIL, B. I. On the application of Ateb-functions to the construction of an asymptotic solution of the perturbed nonlinear Klein-Gordon equation. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 50, n. 5, p. 665–670, 1998. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4904. Acesso em: 5 dec. 2025.