Evaluation of the one electron expectation values for different wave function of Be atom. Baghdad Science Journal, Iraq, Baghdad, v. 4, n. 3, p. 393–396, 2021. DOI: 10.21123/bsj.2007.4.3.393-396. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/816.. Acesso em: 13 may. 2024.