Andal , C., and P. Murugakoothan. “Third Order Nonlinear Optical Properties of Urea Salicylic Acid for Phot Ionic Applications”. Challenges and Advances in Chemical Science Vol. 9 (April 9, 2022): 11–17. Accessed June 13, 2026. https://stm.bookpi.org/CACS-V9/article/view/6447.