Modeling of slag foaming height of electric arc furnace using stepwise regression analysisJaegak Lee, Jungkeuk Kim, Haejin Hwang, Kyungchan Son, Wonseok Jeon, Younghwan Kim, Hyungsic Um and Hyunseok YangMetall. Res. Technol., 117 1 (2020) 114DOI: https://doi.org/10.1051/metal/2020008