Preparation and characterization by thermal lens spectroscopy of SiO2 monoliths having optical memory properties due to the incorporation of Mn and Cr O. Gómez-Guzmán, L.L. Díaz-Flores et J.M. Yáñez-LimónJ. Phys. IV France, 125 (2005) 209-212DOI: https://doi.org/10.1051/jp4:2005125049
