Nuclear magnetic resonance of23Na,27Al, and29Si and cation disorder in nepheline Brinkmann, D. ; Ghose, S. ; Laves, F. Abstract Publication: Zeitschrift fur Kristallographie Pub Date: July 1972 DOI: 10.1524/zkri.1972.135.3-4.208 Bibcode: 1972ZK....135..208B