불화물, 유산화물, 규산화물은 하기 문헌참조 J.F. Elliott, M.Gleiser : Thermochemistry for Steel making. Vol.1(1960), Addision Wesley. C.J. Osborn : J.Met, Trans, AIME, 188(1950), 600 A.Glasener : Argonne National Laboratory Operated by the University of Chicago for the U.S. Atomic Energy Commission under Contract W-31-109 H.H Kellogg : Trans. Met. Soc. AIME. 230(1964), 1622