Weesepoel, Yannick, Samuel Heenan, Rita Boerrigter-Eenling, Tjerk Venderink, Marco Blokland, and Saskia van Ruth. “Protocatechuic Acid Levels Discriminate Between Organic and Conventional Wheat from Denmark”. CHIMIA 70, no. 5 (May 25, 2016): 360. Accessed April 24, 2024. https://www.chimia.ch/chimia/article/view/2016_360.