Wójciak-Kosior, Magdalena, Renata Nowak, Anna Sokołowska-Krzaczek, Wioleta Pietrzak, Ireneusz Sowa, and Ryszard Kocjan. 2012. “Determination of Oleanolic and Ursolic Acid in Bilberries (Vaccinium Myrtillus L.)”. Current Issues in Pharmacy and Medical Sciences 25 (2): 146-48. https://doi.org/10.12923/j.2084-980X/25.2/a.07.