1. Abraham, E. P.: The chemistry of penicillin. Historical introduction. In: Antibiotics by H. W. Florey, E. Chain, N. G. Heatley, M. A. Jennings, A. G. Sanders, E. P. Abraham, and M. E. Florey. Oxford University Press 1949.
2. Abraham, E. P.: The cephalosporins. Pharmacol. Rev. 14, 473 (1962).
3. Abraham, E. P., and G. G. F. Newton: The structure of Cephalosporin. Biochem. J. 79, 377 (1961).
4. Abraham, E. P., and G. G. F. Newton: Unpublished experiments 1963.
5. Abraham, E. P., G. G. F. Newton, and S. C. Warren: Studies on the biosynthesis of the cephalosporins. In: Chemistry of microbial products. I. A. M. Symposium on Microbiology No 6, 79 (1964).