Suresh, T., K.S. Math, and V.H. Kulkarni. 2010. “ Adduct Formation of Nickel(II) Chelates of 4-Methyl and 2- Methyl 8-Quinolinols With Heterocyclic Nitrogen Bases ”. Asian Journal of Chemistry 5 (2):296-304. https://asianpubs.org/index.php/ajchem/article/view/24806.