Adiene Fernandes Kieling Gonçalves, Rossana Barcellos Friedrich, Aline Augusti Boligon, Mariana Piana, Ruy Carlos Ruver Beck, and Margareth Linde Athayde. “Anti-Oxidant Capacity, Total Phenolic Contents and HPLC Determination of Rutin in Viola Tricolor (L) Flowers”. Free Radicals and Antioxidants 2, no. 4 (December 29, 2012): 32–37. Accessed September 17, 2021. https://antiox.org/index.php/fra/article/view/253.