Verma, R., & Joshi, G. (2010). Electronic Spectral Parameters of the Saturated Solutions of Some Amino Acids and Some Bioactive N-Heterocyclic Compounds Doped with Pr(III) Ion. Asian Journal of Chemistry, 13(2), 704–708. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/22653