Mechanism of photoionization of photothermo- refractive glass - Glebov, L.; Magon, Claudio José; Donoso, José Pedro; Lima, José Fernando de; Eckert, Hellmut; Zanotto, E. Dutra; Mingareev, H.; Glebova, I.; Kompan, F. (Pacific Rim Conference on Ceramic and Glass Technology, 2017)