Kristaps Māliņš. "PRODUCTION OF BIODIESEL USING K2CO3, K3PO4, NA2CO3 AND NA3PO4 AS ALKALINE CATALYSTS.." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Energy and Clean Technologies (2018): 579-586. https://doi.org/10.5593/sgem2018/4.1/s17.075