Leung, Allen W.K., Kaup, John G., Bellert, D., McCaffrey, John G. and Breckenridge, W.H. (1999) Spectroscopic characterization of the weakly bound Ca(4s4dσ 3D3)⋅Ar[3Σ+] state: Evidence for a substantial maximum in the potential curve at long range. Journal of Chemical Physics, 111 (6). pp. 2484-2489. ISSN 0021-9606
Leung, Allen W.K., Kaup, John G., Bellert, D., McCaffrey, John G. and Breckenridge, W.H. (1999) Spectroscopic characterization of excited Ca(4s4dδ 3DJ)RG(3Δ1,2) states (RG=Ar, Kr, Xe): No “heavy-atom” mixing of RG(ndδ) character into the wave functions. Journal of Chemical Physics, 111 (3). pp. 981-987. ISSN 0021-9606