1. B. Matkovics, R. Novák, Hoang Duc Hanh, L. Szabó, Sz. I. Varga and G. Zalesna, Comp. Biochem. Physiol.56B, 31 (1977).
2. B. Matkovics, R. Novák, Hoang Duc Hanh, L. Szabó and Sz. I. Varga, Comp. Biochem. Physiol.56B, 397 (1977).
3. I. Fridovich, in: Horizons in Biochemistry and Biophysics, p. 1. Ed. E. Quagliariello. Addison-Wesley Publ. Co., London 1974.
4. O. H. Lowry, N. J. Rosebrough, A. L. Farr and R. J. Randall, J. biol. Chem.193, 265 (1951).