Photo-induced effects in 'Ge IND.25''Ga IND.10''S IND.65' glasses studied by XPS and XAS - Lisboa-Filho, Paulo Noronha; Mastelaro, Valmor Roberto; Schreiner, W. H.; Messaddeq, Sandra Helene; Siu Li, Máximo; Messaddeq, Younnes; Hammer, P.; Ribeiro, S. J. L.; Parent, Paul; Laffon, C. (Solid State Ionics, 2005)