Transformation of Differential – Algebric Equations system to a system of differential equations using index reduction. مجلة المنصور, [S. l.], v. 24, n. 1, p. 75=83, 2022. Disponível em: https://journal.muc.edu.iq/journal/article/view/161. Acesso em: 9 سبتمبر. 2025.