Sönmez, İbrahim, and K. Şahbudak. “Optimization of Sponge Iron (direct Reduced Iron) Production With Box-Wilson Experimental Design by Using Iron Pellets and Lignite As Reductant”. Revista De Metalurgia, vol. 59, no. 2, Oct. 2023, p. e241, doi:10.3989/revmetalm.241.