Advances in thermal level measurement techniques using mathematical models, statistical models and decision support systems in blast furnaceAshish Agrawal, Anil Kumar Kothari, Arun Kumar, Manish Kumar Singh, Shivendra Kumar Dubey, R.V. Ramna and Shambhu NathMetall. Res. Technol., 116 4 (2019) 421DOI: https://doi.org/10.1051/metal/2019019