69,71Ga solid state static, MAS and DAS NMR study of β-Ga2O3 D Massiot, I Farnan, N Gautier, D Trumeau, P Florian and PJ Grandinetti J. Chim. Phys., 92 (1995) 1847-1850 Published online: 29 May 2017 DOI: 10.1051/jcp/1995921847