4Jouko Harkki, Marko Plander. "Theoretical Considerations about Reoxidation of the Steel Melt by Refractory Materials", Interceram, 1991,40 (5) : 284 - 289.
5Lumir Kuchar, Jouko Harkki ,"RefractoryMaterial-Source of Reoxi-dation inTundish", UNITECR 1993 CONGRESS, S"ao Paulo, Brazil, 1398 - 1410.