MITROPOLSKY , Yu. A.; ROGOVCHENKO , Yu. V. Averaging of pulse evolution systems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 1, p. 76–83, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7797. Acesso em: 6 dec. 2025.