K. Agrawal*, Suresh, Rajesh Kumar, G.P. Pokhariyal †, and D.K. Tyagi‡. 2010. “Studies on Zr(IV) and Th(IV) Complexes of Mannich Bases ”. Asian Journal of Chemistry 3 (4):467-69. https://asianpubs.org/index.php/ajchem/article/view/25277.