MAHMOUD MUSTAFA, B. The Effect of Ionic Substitution on the E.P. of Superconductor using Madelung Method. Journal of Education and Science, [S. l.], v. 22, n. 1, p. 78–92, 2009. DOI: 10.33899/edusj.2009.57434. Disponível em: https://edusj.uomosul.edu.iq/index.php/edusj/article/view/42094. Acesso em: 16 dec. 2025.