E. Malchukova, B. Boizot, G. Petite, and D. Ghaleb, Optical properties and valence state of Sm ions in aluminoborosilicate glass under ??-irradiation, Journal of Non-Crystalline Solids, vol.353, issue.24-25, pp.2397-2404, 2007.
DOI : 10.1016/j.jnoncrysol.2007.04.003

URL : https://hal.archives-ouvertes.fr/hal-00324580

H. Bohm and G. Bayer, Esr-spectra of sodium-titanium-silicate glasses and of titanium-containing oxide compounds, Journal of Physics and Chemistry of Solids, vol.31, issue.9, p.2125, 1970.
DOI : 10.1016/0022-3697(70)90013-2