Gurnule, W.B., H.D. Juneja, and L.J. Paliwal. 2010. “Synthesis and Characterization of 8-Hydroxyquinolone-Melamine-Formaldehde Terpolymers”. Asian Journal of Chemistry 12 (1):51-57. https://asianpubs.org/index.php/ajchem/article/view/22881.