SOBCHUK, V. V.; ZELENSKA, I. O. Construction of asymptotics of the solution for a system of singularly perturbed equations by the method of essentially singular functions. Bulletin of Taras Shevchenko National University of Kyiv. Physical and Mathematical Sciences, [S. l.], n. 2, p. 184–192, 2023. DOI: 10.17721/1812-5409.2023/2.34. Disponível em: https://bphm.knu.ua/index.php/bphm/article/view/414. Acesso em: 12 apr. 2024.