HYBSKÁ, Helena - ĎURICOVÁ, Anna. Influence the properties of sewage sludge creating mixtures with biochar. In GeoConference on ecology, economics, education and legislation : conference proceedings. - Sofia : STEF92 Technology, 2014. ISBN 978-619-7105-18-6. ISSN 1314-2704, p. 383-390. APVV-0353-11 ; ITMS 26110230112. WOS, SCOPUS.