Ranjana Devi, N. et al. 2012. Absorption Spectral Study of Pr(III) Complexes with L-Alanyl-L-Glutamine and N-Acetyl-L-Glutamine: Interaction Parameters, Bonding and Judd-Ofelt Intensity. Asian Journal of Chemistry. 24, 7 (Mar. 2012), 2863–2870.