Supercritical solvent impregnation of ophthalmic drugs on chitosan derivatives - Braga, Mara Elga Medeiros; Pato, Maria Teresa Vaz; Silva, Hélio Santa Rosa Costa; Ferreira, Elizabeth Igne; Gil, Maria Helena; Duarte, Catarina M. M.; Sousa, Hermínio C. de (Journal of Supercritical Fluids, 2008)