Duarte A. R. C., Simplicio A. L., Gonzalez A. V., Subra-Paternault P., Coimbra P., Sousa H. C., and Duarte C. M.,  "Impregnation of an intraocular lens for ophthalmic drug delivery",  Current Drug Delivery, vol. 5, issue 2, pp. 102-107, 2008.