Raman investigation of structural photoinduced irreversible changes of 'Ga UND.10''Ge IND.25''S IND.65' chalcogenide glasses - Messaddeq, Sandra Helena; Siu Li, Máximo; Lezal, D; Messaddeq, Younnes; Ribeiro, S J L; Oliveira, L F C; Rollo, João Manuel Domingos de Almeida (Journal of Optoelectronics and Advanced Materials, 2001)