1. Sponge iron manufacturer's association statistics, www.spongeironindia.in/prodfig06-07.html.
2. Comprehensive Industry Document Series COINDS Comprehensive Industry Document on Iron Ore Mining. August/2007–08.
3. Sponge Iron Production by Direct Reduction of Iron Oxide;Chatterjee,2010
4. Recovery of carbon from sponge iron plants – studies on the dust samples;Rani Devi;Environ. Sci. Eng.,2007
5. Indian sponge iron production – problems and solutions;Misra;SGAT Bull.,2006