title: [Simple formulae for the calculation of Li-like and Be-like ionic energies of ground states].
abstract: Using the two-parameter variational method, the simple formulae for the calculation of Li-like and Be-like ionic energies of ground states has been derived, which show convenience in calculation and accuracy.
authors.affiliation: Sichuna Union University, 610065 Chengdu.
authors.forename: Z
authors.initials: Z
authors.lastname: Xu
authors.forename: Y
authors.initials: Y
authors.lastname: Gao