1. Coke quality and production;Loison,1989
2. Nomura S, Arima T, Nishi T. Current advances in materials and processes: iron and steel institute of Japan, vol. 4, 1991. p. 132.
3. Klose W, Heckmann H. 1989 International Conference on Coal Science. NEDO, Tokyo, 1989. p. 1063.