@article{articlecccd19a3,
title   = {Preparation and characterization of carboxymethylchitosan},
author = {Abreu, Fernanda R de and Campana Filho, Sergio Paulo},
year = {2005},
doi = {10.1590/s0104-14282005000200004},
journal   = {Polímeros Ciência e Tecnologia}
}