KASYMOV, K. A.; NURGABYL, D. N.; UAISSOV, A. B. Asymptotic estimates for the solutions of boundary-value problems with initial jump for linear differential equations with small parameter in the coefficients of derivatives. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 5, p. 629–641, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2447. Acesso em: 11 apr. 2025.