Meshram, Y.K., M.L. Narwade, and A.M. Mandakmare. 2010. “Stability Constant of Pr(III), Nd(III) and Sm(III) Chelates With Some Substituted Pyrazolines”. Asian Journal of Chemistry 12 (4):1027-30. https://asianpubs.org/index.php/ajchem/article/view/23124.