Using Euler-Lagrange Equation In Solving Isoperimetric Problems. مجلة المنصور, [S. l.], v. 8, n. 1, p. 95–139, 2023. Disponível em: https://journal.muc.edu.iq/journal/article/view/359. Acesso em: 5 سبتمبر. 2025.