Karm A. Khalaf, and Adnan O. Omar. “Green Synthesis and Spectroscopic Study of New Heterocyclic Compounds Derived from Ethyl Coumarilate”. African Journal of Advanced Pure and Applied Sciences (AJAPAS), vol. 2, no. 2, June 2023, pp. 281-9, https://aaasjournals.com/index.php/ajapas/article/view/383.