Avalanche-like behaviour from 'Tm POT. 3+' doped lead fluoroindogallate glasses - Bell, Maria José Valenzuela; Sousa, Dione Fagundes de; Oliveira, S. L.; Lebullenger, Ronan; Hernandes, Antônio Carlos; Nunes, Luiz Antônio de Oliveira (Brazilian Symposium on Glasses and Related Materials, 1999)