1. T. Rockwell, Report Number ORNL-241 (1949).
2. R. Clark, Report Number HW-56195 (1958).
3. S. Gill, Structures for Nuclear Power, New York-London (1964).
4. V. B. Dubrovskii et al., Atomnaya Énergiya,21, 108 (1966).
5. A. N. Vorob'ev et al., Beton i Zhelezobeton, No. 7, 11 (1966).