Islam, M. S.; Mousume, N.; Hossain, M. M.; Aziz, M. A.; Islam, M. S. Theoretical Investigation of Non-Linear Optical (NLO) Properties and UV-Visible Spectra of N-(3, 5-dichlorobenzylidene)aniline and N-(3, 5- dichlorobenzylidene)4-Nitroaniline. Dhaka Univ. J. Sci. 2018, 66, 139-143.