D. O. Kennedy, R. Veasey, A. Watson, F. Dodd, E. Jones, S. Maggini, and C. F. Haskell, «Effects of High-dose B Vitamin Complex with Vitamin C and Minerals on Subjective Mood and Performance in Healthy Males». Psychopharmacology 211, no. 1 (Jul. 2010): 55–68.