R, T., R. K, M. K, R. S, and S. E. “Exploring Second-Order Nonlinear Optical Performance in Oxyquinolinium 3-Carboxypropanoate: A Combined Experimental and DFT Study”. International Research Journal of Multidisciplinary Technovation, vol. 7, no. 6, Nov. 2025, pp. 191-1, doi:10.54392/irjmt25612.