Asymptotic behavior of solutions for differential equations with double singularity in conditionally stable case. Neliniini Kolyvannya, [S. l.], v. 21, n. 1, p. 36–53, 2018. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/895. Acesso em: 21 jan. 2026.