FORMATION AND SINTERING OF γ-Al2 O3 WITH MgO ADDITIONS FROM COPRECIPITATED HYDRATES J. KATANIC-POPOVIC, M. GASIC and Lj. KOSTIC-GVOZDENOVIC J. Phys. Colloques, 47 C1 (1986) C1-31-C1-35 DOI: 10.1051/jphyscol:1986105