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(2):139-143. doi:10.3329/dujs.v66i2.54559