Shaji, Y. C., G. L. Rose, M. A. Malbi, and S. A. Sinthuja. “Synthesis and Characterization of Novel Polyesterimide Containing Naphthalene Moiety”. The International Journal of Science & Technoledge, vol. 3, no. 4, Apr. 2015, http://internationaljournalcorner.com/index.php/theijst/article/view/124407.