Gucma, Mirosław, W. Marek Golebiewski, Krzysztof Zelechowski, and Maria Krawczyk. 2019. “Studies on the [2+3] Cycloaddition Reaction of Nitrile Oxides to Abietic Acid Esters”. Journal of the Serbian Chemical Society 84 (10). Belgrade, Serbia:1073–1081. https://doi.org/10.2298/JSC180517018G.