Orera, A Effect of oxygen content on the 29Si NMR, Raman spectra and oxide ion conductivity of the apatite series, La8+xSr2-x(SiO4)6O2+x/2. [electronic resource] - Dalton transactions (Cambridge, England : 2003) Oct 2008 - 5296-301 p. digital Publication Type: Journal Article ISSN: 1477-9226 Standard No.: 10.1039/b809062a doi