Preparation of low-ash products from Slovak sub-bituminous coals – a material balance

by Hredzák, Slavomír, Zubrik, Anton, Dolinská, Silvia, Lovás, Michal, Jakabský, Štefan
Source: 1. Acta Montanistica Slovaca 1. Roč. 15, č. 4 (2010), s. 283-289 1. 1335-1788