The acute effect of flavonoid-rich apples and nitrate-rich spinach on cognitive performance and mood in healthy men and women oleh C.P. Bondonno, L.A. Downey, K.D. Croft, A. Scholey, C. Stough, N.C. Ward, M.J. Considine, I.B. Puddey, E. Swinney, A. Muburak, J.M. Hodgson