„Reducing the Sludge Quantity Produced from Used Water Purification – A Source of Profit“, Ann_UGAL_MMS, Bd. 39, Nr. 4, S. 61–63, Dez. 2016, Zugegriffen: Nov. 02, 2026. Verfügbar unter: https://ojs.ugal.ro/index.php/mms/article/view/1228