1. The Role of Ginkgo Biloba in Cognitive Function and Memory Enhancement" – Mix JA, Crews WD Jr. (Human Psychopharmacology, 2000)
2. "Phosphatidylserine Supplementation: Its Impact on Memory and Cognitive Function" – Jorissen BL, et al. (Nutrition, 2001)
3. "N-Acetyl-L-Carnitine: Clinical Evidence for Its Benefits in Cognitive Health and Memory" – Montgomery SA, et al. (International Clinical Psychopharmacology, 2003)
4. "The Role of L-Glutamine in Supporting Cognitive Function and Brain Health" – Newsholme P, et al. (Brain Research Reviews, 2003)
5. "L-Glutamine's Role in Supporting Neurotransmitter Synthesis and Cognitive Health" – Häberle J, et al. (Molecular Genetics and Metabolism, 2011)
6. "The Potential of Phosphatidylserine in Treating Memory Impairment" – Zanotta D, et al. (Aging Clinical and Experimental Research, 2014)
7. "The Neuroprotective Effects of Ginkgo Biloba on Cognitive Decline" – Yang G, et al. (Journal of Alzheimer's Disease, 2016)
8. "Phosphatidylserine and Its Potential in Treating Cognitive Decline" – Richter Y, et al. (Advances in Therapy, 2013)
9. "Alpha Glycerophosphorylcholine (Alpha-GPC) and Its Effectiveness in Improving Memory and Learning" – De Jesus Moreno Moreno M (Journal of the International Society of Sports Nutrition, 2003)
10. "Bacopa Monnieri and Its Cognitive Benefits in the Aging Brain" – Calabrese C, et al. (Alternative Therapies in Health and Medicine, 2008)