PREPARATION OF THORIA-BASED POWDERS VIA DECOMPOSITION FROM NITRATE SOLUTION B.J.F. PALMER, L.E. BAHEN, A.Y.H. GIN, J.E. WINEGAR et A. CELLI J. Phys. Colloques, 47 C1 (1986) C1-49-C1-54 DOI: 10.1051/jphyscol:1986108