Moura D., Caridade S. G., Sousa M. P., Cunha E., Mano J. F., Paiva M. C., and Alves N. M.,  "High performance free-standing films by layer-by-layer assembly of graphene flakes and ribbons with natural polymers",  Journal Of Materials Chemistry B, vol. 4, issue 47, pp. 7718-7730, doi:10.1039/C6TB02344D, 2016.