1. R. E. Zir Rad. Biology I, part I (A. Hollaender 1954) p. 315.
2. W. Dittrich, and G. Schubert, Strahlentherapie 92, 4, 532?554 (1954).
3. H. G�rtner, Strahlentherapie 96, 3, 378?395 (1955).
4. J. B. Storer, J. E. Furchner, and A. T. Krebs, J. Aviation Med. 25, 4, 368?377 (1954).
5. H. H. Vogel, Jr., and S. P. Steamer, Rad. Res. 2, 6, 513?522 (1955).