“Preparation and Spectroscopic Characterization of Iron(III) Complexes of a Functionalized Crown Ether ”. University of Thi-Qar Journal of Science 3, no. 1 (May 13, 2019): 78–88. Accessed May 7, 2024. https://jsci.utq.edu.iq/index.php/main/article/view/195.