! ! REFERENCE: B. Prascher, D.E. Woon, K.A. Peterson, T.H. Dunning, Jr., and A.K. Wilson, ! Theor. Chem. Acc., DOI:10.1007/s00214-010-0764-0 ! ! LITHIUM (9s,4p,1d) -> [3s,2p,1d]