HA-PHI. Solvability Analysis of high-order Linear Differential-Algebraic Equations with time-varying coefficients. HPU2 Journal of Science: Natural Sciences and Technology, [S. l.], v. 3, n. 1, p. 64–77, 2024. DOI: 10.56764/hpu2.jos.2024.3.1.64-77. Disponível em: https://sj.hpu2.edu.vn/index.php/journal/article/view/227. Acesso em: 24 nov. 2024.