33Application of Gaussian Wave Functions for 1s States in Helium and Helium Like Atoms. Al-Nahrain Journal of Science, [S. l.], v. 16, n. 3, p. 98–103, 2013. Disponível em: https://anjs.edu.iq/index.php/anjs/article/view/586.. Acesso em: 22 nov. 2024.