“Preparation and Spectroscopic Characterization of Iron(III) Complexes of a Functionalized Crown Ether ”, UTJsci, vol. 3, no. 1, pp. 78–88, May 2019, Accessed: Dec. 26, 2024. [Online]. Available: http://mail.jsci.utq.edu.iq/index.php/main/article/view/195