SUWAN, Iyad. Euler-Lagrange Equations with Generalized ABC and ABR Nabla Fractional Differences. AAUP Journal of STEM and Health Sciences, [S. l.], v. 1, n. 1, p. 128–147, 2026. Disponível em: https://jsh-aaup.aaup.edu/index.php/jsh-aaup/article/view/9. Acesso em: 6 oct. 2026.