8Saleh-Jahromi A, Mobes W. Energy levels of the lithium atom. EurJ Phys, 1998, 19(5): 335-360
9Safronoav U I, Bruch R, Hao F. Screening theory for transition energies of highly charged ions. Phys Scr, 1993, 47:51-67
10de la Vega Garcia J M, Miguel B, Ramirez G. Single-exponent Slater function expansions for lithium to neon atoms. J Phys B-At Mol Opt Phys, 1996, 29:5273-5282