Kalmijn S. et al. Dietary Intake of Fatty Acids and Fish in Relation to Cognitive Performance at Middle Age // Neurology, 2004. Vol. 62, № 2. P. 275–280 // ; Chung W. L. et al. Fish Oil Supplementation of Control and (n-3) Fatty Acid-Deficient Male Rats Enhances Reference and Working Memory Performance and Increases Brain Regional Docosahexaenoic Acid Levels // Journal of Nutrition, 2008. Vol. 138, № 6. P. 1165–1171.