I.T.Abed-Ali, and C.A.Emshary. 2019. “Determination of Nonlinear Refractive Index of Paprika Oil and Pepper Oil under Cw Visible Laser Illumination ”. University of Thi-Qar Journal 12 (3):90-101. https://www.jutq.utq.edu.iq/index.php/main/article/view/103.