1. N. IZUMIYA, T. KATO, H. AOYAGI: Synthetic aspects of biologically active cyclic peptides. Gramicidin S and tyrocidines, J. Wiley & Sons, New York (1979)
2. R.B. MORIN, M. GORMAN: Chemistry and biology of β-lactam-antibiotics, Vol. 1–3, Academic Press, New York (1982)
3. Y. YZUMI, A. TAI: Stereodifferentiating reactions, Academic Press, New York (1977)
4. M.I. PAGE: The mechanisms of reactions of β-lactam antibiotics, Advances in physical organic chemistry, Vol. 23, S. 165 (1987)
5. G. HABERMEHL: Gifttiere und ihre Waffen, Springer-Verlag, Berlin – Heidelberg – New York – Tokyo, 1994