1. Ayscough, P. B., Mach, K., Oversby, J. P., Roy, A. K.: Electron spin resonance studies of fundamental processes in radiation- and photo-chemistry. Part 6. - The radiolysis of acetic acid. Trans. Faraday Soc.67, 360?374 (1971)
2. Box, H. C., Freund, H. G., Budzinski, E. E.: Radiation effects on amino acids: valine. J. chem. Phys.46, 4470?4473 (1967)
3. Box, H. C., Freund, H. G., Lilga, K.: Radiation-induced paramagnetism in some simple peptides. In: Free radicals in biological systems, p. 239 (Blois, Jr., M. S., Brown, H. W., Lemmon, R. M., Lindblom, R. O., Weissbluth, M.,Eds.). New York-London: Academic Press 1961
4. Chikvaidze, E. N., Il'Yasova, V. B., Azizova, D. A., L'Vov, K. M.: Free radicals formed by electron capture and their phototransformations in N-methylacetamide. Stud, biophys. (Berlin)35, 131?148 (1973)
5. Fischer, H.: Structure of free radicals by ESR spectroscopy. In: Free radicals, Vol. II, p. 435 (Kochi, J. K.,Ed.). New York: John Wiley & Sons 1973