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2. Electrochemical study of the degradation of vitamin K3 and vitamin K3 bisulfite
3. H.J. Almquist, in: W.H. Sebrell, R.S. Harris (Eds.), The Vitamins, vol. 3, Academic Press, New York, 1971, pp. 510–512
4. VITAMIN K-DEPENDENT CARBOXYLASE
5. Y. Nemerson, W.J. William, in: A.J. Erolev, W.J. Williams, M.A. Lichtmann, E. Butler (Eds.), Ematologia, ch. 33, McGraw-Hill Libri, Milano, 1992.