Bedekar, A.N., A.C. Pise, C.S. Thatte, and M.V. Rathnam. 2010. “Study on Optimization of Carboxymethylation of Chitosan Obtained from Squilla Chitin”. Asian Journal of Chemistry 22 (10):7675-82. https://asianpubs.org/index.php/ajchem/article/view/12086.