Buczek, Bronisław, and Piotr Kozera. 2015. “Glycerol As a By-Product of Biodiesel Production”. Krakow Review of Economics and Management Zeszyty Naukowe Uniwersytetu Ekonomicznego W Krakowie, no. 912 (December): 5-16. https://doi.org/10.15678/krem.766.