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Abdel-Aal, E.-S.M.; Young, J.C.; Rabalski, I., Anthocyanin composition in black, blue, pink, purple, and red cereal grains, J. Agric. Food Chem., 2006, 54, 13, 4696-4704, https://doi.org/10.1021/jf0606609 . [all data]