B. Can-Uc, R. Rangel-Rojo, H.T.M.C.M. Baltar, A. Peña-Ramírez, A. Crespo-Sosa, Cid B. de Araújo, M. L. Garcia-Betancourt, A. Oliver, “Nonlinear optical response of platinum nanoparticles and platinum ions embedded in sapphire”, Optics Express Vol. 24, Issue 9, pp. 9955-9965 (2016).