Site selective spectroscopy and crystal field analysis of 'Er POT.3+' in 'Ca IND.3''Ga IND.2''Ge IND.3''O IND.12' garnet - Santana, Ricardo Costa de; Munoz Santiuste, J E; Nunes, Luiz Antônio de Oliveira; Basso, Heitor Cury; Terrile, Maria Cristina (Journal of Physics-Condensed Matter, 2001)