Jankulovska, M.S., Šoptrajanova, L. and Spirevska, I. 2006. Behaviour of glutaconic and aconitic acid in sulfuric acid medium. Macedonian Journal of Chemistry and Chemical Engineering. 25, 2 (Dec. 2006), 89–97. DOI:https://doi.org/10.20450/mjcce.2006.290.