PRADYUMNA KUMAR SWAIN, et al. “BIOCOMATIBLE COPOLYMER FROM CHITOSAN-SUBSTITUTED POLYANILINE: GRAFT COPOLYMERIZATION OF POLY (ORTHOPHENYLE DIAMINE) ONTO CHITOSAN”. International Journal of Pharma and Bio Sciences, vol. 6, no. 4, Dec. 2015, pp. 476-81, https://ijpbs.net/index.php/journal/article/view/4637.