Porous magnesite plugs for degassing of steel through the ladle bottom - Bugaev, N. F.; Simonov, K. V.; Osipova, L. Ya.; Lyubimov, V. N.; Pchelkin, M. S.; Barmotin, I. P. (Springer, 1969)
http://dx.doi.org/10.1007/BF01295348
Keywords: ZL