S. S. Chowdhury, M. Al-Amin, M. Jamila, S. Haque, T. Ahmed, and M. E. H. Mazumder, “Infrared spectroscopic characterization, free radical scavenging and cytotoxic evaluation of chitosan extracted from <i>Penaeus monodon</i> shells”, S.J. Pharm. Sci, vol. 2, no. 2, pp. 27–30, Aug. 2010.