Silva J. M., Duarte A. R. C., Caridade S. G., Picart C., Reis R. L., and Mano J. F.,  "Tailored Freestanding Multilayered Membranes based on chitosan and Alginate",   Biomacromolecules, vol. 15, pp. 3817-38-26, doi:10.1021/bm501156v, 2014.