S.A. SHCHOGOLEV. On the Reduction of the Linear System of the Differential Equations with coefficients of oscillating type to the Triangular Kind in the Non-resonant Case. Bulletin of L.N. Gumilyov Eurasian National University. Mathematics, computer science, mechanics series, [S. l.], v. 130, n. 1, p. 82–92, 2020. Disponível em: https://bulmathmc.enu.kz/index.php/main/article/view/67. Acesso em: 27 dec. 2024.