R. Barrois et al., ACCURATE NONRELATIVISTIC ENERGIES FOR THE 2 LOWEST S-4 STATES OF THE LI-I ISOELECTRONIC SERIES, Chemical physics letters, 249(3-4), 1996, pp. 249-252
An accurate upper bound calculation for the two lowest S-4 states of t
he Li I isoelectronic series from Be II-Ne VIII is given using an exte
nsive Hylleraas-CI calculation.