Al-Dahan, Ziad T., and Sinan A. Al-Magazachi. “Laser Based Measurement for Liquid Refractive Index”. Nahrain University College of Engineering Journal, vol. 14, no. 1, Mar. 2011, pp. .88-96, https://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/605.