1. Marzo A., Cardace G., Rescigno A., Arrigoni Martelli E. (1992): Pharmacokinetics of endogenous substances: role of homeostatic equilibria and enzyme-catalyzed stereo specific assay. In: Brès J., Panis G. (eds), Pharmacocinétique: de la recherche à la clinique. John Libbey Eurotext, pp. 268–269.
2. Hillman R.S. (1990): Iron and iron salts. In: Goodman Gilman A., Rall T.W., Nies A.S., Taylor P. (eds), Pharmacological Basis of Therapeutics. 8th edn. New York, Pergamon Press, pp. 1282–1292.
3. Marzo A., Arrigoni Martelli E., Urso R., et al. (1989): Metabolism and disposition of intravenously administered acetyl-l-carnitine in healthy volunteers. Eur. J. Clin. Pharmacol., 37, 59–63.
4. Johansson S., Lindsted S., Tiselius H.G. (1974): Metabolic interconversions of different forms of vitamin B6. J. Biol. Chem., 249, 6040–6046.
5. Karlson P. (1966): Biochimica. Italian translation of the book ‘Kurzes Lehrbuch der Biochemie für Mediziner und Naturwissenschofter’ by Zambotti V. Milan, Manfredi, p. 367.