Fluorescence and magneto-optics of 'Er POT.3+' in 'Ca IND.3''Ga IND.2''Ge IND.3''O IND.12' garnet - Santana, R C; Nunes, Luiz Antônio de Oliveira; Basso, Heitor Cury; Terrile, Maria Cristina; Barberis, G E (Solid State Communications, 1998)