En slovaque = Development of trace element contents in steels = Entwicklung der Gehalte an Spurenelementen in Staehlen der Ostslowakischen Eisenwerke, KosiceHRIC, J; BERGHAUER, Z.Hutník (Praha). 1987, Vol 37, Num 2, pp 54-58, issn 0438-2757Article

POUZITIE PEVNEHO PALIVA VO VSADZKE KYSLIKOVYCH KONVERTOROV = APPLICATION OF SOLID FUEL IN BASIC OXYGEN CONVERTERSRUSNAK J; BERGHAUER Z; STRACAR S et al.1981; HUTNIK (PRAGUE); CSK; DA. 1981-12; VOL. 31; NO 12; PP. 432-435Article