Reljanovic, M; Reichel, G; Rett, K; Lobisch, M; et al. (septembrie 1999). „Treatment of diabetic polyneuropathy with the antioxidant thioctic acid (alpha-lipoic acid): A two year multicenter randomized double-blind placebo-controlled trial (ALADIN II). Alpha Lipoic Acid in Diabetic Neuropathy”. Free Radical Research. 31 (3): 171–9. doi:10.1080/10715769900300721. PMID10499773.
Reljanovic, M; Reichel, G; Rett, K; Lobisch, M; et al. (septembrie 1999). „Treatment of diabetic polyneuropathy with the antioxidant thioctic acid (alpha-lipoic acid): A two year multicenter randomized double-blind placebo-controlled trial (ALADIN II). Alpha Lipoic Acid in Diabetic Neuropathy”. Free Radical Research. 31 (3): 171–9. doi:10.1080/10715769900300721. PMID10499773.
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„Lipoic acid”. Micronutrient Information Center, Linus Pauling Institute, Oregon State University, Corvallis. . Accesat în .