1. World Steel Association (2018) Word Steel in Figures 2018
2. Schenk J, Lüngen HB (2016) Evaluation of the capabilities of direct and smelting reduction processes to enhance the energy efficiency and to reduce the CO2 emission of the steel production in Europe. In: 7th European coke and ironmaking congress—ECIC 2016, Sept 12–14, 2016, Linz, Austria
3. Millner R, Ofner H, Boehm C, Ripke SJ, Metius M (2017) Future of direct reduction in Europe-Medium and long-term perspective. In: European steel technology and application days 2017—3rd ESTAD 2017, June 26–29, 2017, Vienna, Austria
4. Buergler T, Kofler I (2016) Direct reduction technology as a flexible tool to reduce the CO2 intensity of iron and steelmaking. In: 7th European Coke and Ironmaking Congress—ECIC 2016, Sept 12–14, 2016, Linz, Austria
5. van der Stel J, Meijer K, Teehuis C, Zeijlstra C, Keilman G, Ouwehand M (2013) Update to the development of HIsarna—an ULCOS alternative ironmaking process. In: IEAGHG/IETS iron and steel industry CCUS and process integration workshop. Nov 4–7, 2013, Tokyo, Japan