Testing of earthy brown coal (Lubstów deposit - Poland) as possible additive for coal liquefaction

by Broniek, Elzbieta, Grigoriev, Fedor N., Grigorieva, Eugenia N., Jankowska, Anna, Jasienko-Halat, Maria
Source: 1. 8th Conference on environment and mineral processing, part 2 1. Ostrava : Vysoká škola báňská - Technická univerzita, 2004 1. 80-248-0559-6 1. S. 333-337