@inproceedings{1048765, title = "The ecological ash treatment and the liquidation of the brown coal burning in the Czech Republic", author = "Pisa, V. and Kusy, J.", year = "1999", pages = "479-488", publisher = "Λέκκας, Θεμιστοκλής Δ.", booktitle = "Πρακτικά 6ου Διεθνούς Συνεδρίου Περιβαλλοντικής Επιστήμης και Τεχνολογίας (Τόμος 2)" }