Relativistic Theory of One- and Two Electron Systems: Valley of Stability in the Helium-Like Ions. Journal of Atomic and Molecular Sciences, [S. l.], v. 3, n. 1, p. 23–40, 2012. DOI: 10.4208/jams.012511.030111a. Disponível em: https://www.global-sci.com/index.php/jams/article/view/14614. Acesso em: 5 dec. 2025.