I. T. Abed – Ali, and C. A. Emshary. 2019. “Write – Read All-Optical System Based on Diffraction Ring Patterns in Aloe, Cresson and Taramira Vegetable Oils”. University of Thi-Qar Journal 13 (2):32-41. https://jutq.utq.edu.iq/index.php/main/article/view/133.