@article{oliveira_veloso_leão_santos_botaro_2013,  title={Hydrogels of cellulose acetate crosslinked with pyromellitic dianhydride: part I: synthesis and swelling kinetics},  volume={36},  ISSN={0100-4042},  url={https://doi.org/10.1590/S0100-40422013000100019},  DOI={10.1590/S0100-40422013000100019},  number={1},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Oliveira, Víctor A. and Veloso, Tácia C. and Leão, Versiane A. and Santos, Cláudio G. dos and Botaro, Vagner R.},  year={2013},  pages={102–106} }