1. 1) SCANINJECT : International Conference on Injection Metallurgy, Luleå, Sweden, June, 1977
2. 2) SCANINJECT II, Internationål Conference on Injection Metallurgy, Lnleå, Sweden, June, 1980
3. 3) Meeting on Gas Injection into Liquid Metals, University of Newcastle upon Tyne, England, April, 1979
4. 7) K.MORI, Y.OZAWA, and M.SANO : Met.Trans.B, 10B(1979), p.679
5. 11) J.F.DAVIDSON, and B.O.G.SCHÜLR : Trans.Inst.Chem.Eng., 38(1960), p.144, p.335