Humic acids – a benefit for the envoronmental research

by Mária Skybová
Published 2006-12-01

Preparation of low-ash products from Slovak lignitic coals – material balance

by Anton Zubrík, Silvia Čuvanová, Mária Skybová, Slavomír Hredzák
Published 2006-12-01

Extraction of organic compounds from brown coal

by Slavomír Hredzák, Michal Lovás, Silvia Čuvanová, Ľudmila Turčániová, Mária Skybová, Anton Zubrik
Published 2005-11-01