Improvement of steelmaking technology for production of ultra low carbon steel at No. 3 steelmaking shop in Chiba WorksH. Ishizuka, H. Nishikawa, R. Asaho, M. Ohnishi and Y. KishimotoRev. Met. Paris, 88 3 (1991) 249-254DOI: https://doi.org/10.1051/metal/199188030249