1. Post, R. F., Rev. Mod. Phys., 28, 388 (1956).
2. Pease, R. S., Proc. Phys. Soc., B, 70, 11 (1957).
3. Burkhart, L. C., Dunaway, R. E., Mather, J. W., Phillips, J. A., Sawyer, G. A., Stratton, T. F., Stovall, E. J., and Tuck, J. L., J. App. Phys., 28, 519 (1957).
4. Kurchatov, I. V., Atomnaya Energiya, 1, No. 3, 65 (1956). English translation, J. Nuclear Energy, 4, 193 (1957).
5. Artsimovitch, L. A., Andrianov, A. M., Bazilevskaya, O. A., Prokhorov, YU. G., and Filippov, N. V., Atomnaya Energiya, 1, No. 3, 76 (1956). English translation, J. Nuclear Energy, 4, 203 (1957).