R, T. S., A. S, R. S, V. P. M, and K. R. “A Quantum Chemical Investigation on Structural, Spectroscopic and Nonlinear Optical Properties of an Organic Molecule Serotonin”. International Research Journal of Multidisciplinary Technovation, vol. 6, no. 1, Jan. 2024, pp. 155-71, doi:10.54392/irjmt24112.