1. Alexander, P., Dean, C. J., Hamilton, L. D. G., Lett, J. T., Parkins, G.: Critical structures other than DNA as sites for primary lesions of cell death included by ionizing radiations. In: Cellular radiation biology, p. 241. Baltimore: Williams and Wilkins 1965.
2. Barker, G. R., Pavlik, J. G.: Ribonuclease activity in the Ehrlich ascites tumor. Nature (Lond.)215, 280 (1967).
3. Boudnitskaya, E. V., Brunfaut, M., Errera, M.: Effects of X-rays on RNA and RNA metabolism in HeLa cells. Biochim. biophys. Acta (Amst.)80, 567 (1964).
4. Davidson, J. N., Smellie, R. M. S.: Phosphorus compounds in the cell. 2. The separation by ionophoresis on paper of the constituent nucleotides of ribonucleic acid. Biochem. J.52, 594 (1952).
5. Eckstein, H., Paduch, V., Hilz, H.: Synchronized yeast cells. 3. DNA synthesis and DNA polymerase after inhibition of cell division by X-rays. Europ. J. Biochem.3, 224 (1967).