Hegyi, Juraj; Schwartz, Robert A.; Hegyi, Vladimir (2004). "Pellagra: Dermatitis, dementia, and diarrhea". International Journal of Dermatology 43 (1): 1–5. doi:10.1111/j.1365-4632.2004.01959.x. PMID 14693013.
Seal, AJ; Creeke, PI; Dibari, F; Cheung, E; Kyroussis, E; Semedo, P; Van Den Briel, T (2007). "Low and deficient niacin status and pellagra are endemic in postwar Angola". The American Journal of Clinical Nutrition 85 (1): 218–24. PMID 17209199.