[1]
R. Amjad, M. A. Munawar, S. R. Khan, and M. Naeem, “Synthesis and Spectral Studies of Some Novel Coumarin Based Disperse Azo Dyes: Studies of Coumarin Based Azo Dyes”, Pakistan Journal of Scientific & Industrial Research, vol. 52, no. 3, pp. 117–121, Apr. 2009.