Silva S. S., Duarte A. R. C., Carvalho A. P. B., Mano J. F., and Reis R. L.,  "Green processing of chitin porous structures for biomedical aapplications combining ionic liquids and supercritical fluid technology",  Acta Biomaterialia, vol. 7, pp. 1166-1172, doi:10.1016/j.actbio.2010.09.041, 2011.