“PRODUCTION OF ETHYL ESTER BIODIESEL FROM USED COOKING OIL WITH ETHANOL AND ITS QUICK GLYCEROL-BIODIESEL LAYER SEPARATION USING PURE GLYCEROL”. GEOMATE Journal 17, no. 61 (February 15, 2019): 109–114. Accessed April 19, 2026. https://geomatejournal.com/geomate/article/view/2142.