Amjad, R., Munawar, M. A., Khan, S. R., & Naeem, M. (2009). Synthesis and Spectral Studies of Some Novel Coumarin Based Disperse Azo Dyes: Studies of Coumarin Based Azo Dyes. Biological Sciences - PJSIR, 52(3), 117–121. Retrieved from https://v2.pjsir.org/index.php/biological-sciences/article/view/532