Shrikhande , K.Y. and Chakrabarti, H.C. and Bhattacharya, H.S. and Sinha, M.P. and Basu, T.K. and Bhaduri, K. and Das Gupta, N.N. (1960) Low-temperature Carbonization of Non-Caking Coals from Raniganj. Journal of Mines, Metals & Fuels, 8 (8). pp. 8-21. ISSN 0022-2755