Plastic deformation of MgO : n Al2O3 spinels at temperatures below 1000 °C (0.5 Tm) P. Veyssière, S.H. Kirby et J. Rabier J. Phys. Colloques, 41 C6 (1980) C6-175-C6-178 DOI: 10.1051/jphyscol:1980645