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, vol. 2, no. 4, Dec. 2012, pp. 32-37, doi:10.5530/ax.2012.4.6.