TREATMENT OF REFRACTORY OXIDES IN HF-PLASMA REACTORS A.O. BAKHVALOV, S.V. DRESVIN, T.N. LEVITSKAYA, G.Z. PASKALOV and A.K. PHILIPPOV J. Phys. Colloques, 51 C5 (1990) C5-19-C5-25 DOI: 10.1051/jphyscol:1990503