Electronic Structure Problem of Alkaline Earth Metals. International Journal of Scientific Research and Management (IJSRM), [S. l.], v. 5, n. 7, p. 6165–6172, 2017. DOI: 10.18535/ijsrm/v5i7.44. Disponível em: https://ijsrm.net/index.php/ijsrm/article/view/847. Acesso em: 23 feb. 2025.