Sen, Kalyan and Das, N.S. and Choudhury, Ashim and Choudhury, Nandita and Mitra, S.K. and Chakrabory, D.K. and Dutta, R.K. and Mitra, A (2003) Quality reassessment and evaluation of utilisation potential for Indian Coals of Gondwana formation. Journal of Mines, Metals & Fuels, 51 (1&2). pp. 5-14. ISSN 0022-2755