1. The Effect of Irradiation on the Elements and Materials of Electron Schemes [Russian translation], D. F. Kircher and R. E. Bouman (editors), Atomizdat, Moscow (1959), p. 8.
2. F. I. Mel'nikov, Trudy NIIZhB [in Russian], No. 7, Stroiizdat, Moscow (1959), p. 8.
3. V. B. Dubrovskii et al., Beton i Zhelezobeton, No. 5, 17 (1969).