1. Badhwar G. D., Braby L. A., Cucinotta F. A. and Atwell W. (1992), Nucl. Tracks Radiat. Meas. 20, 447.
2. Badhwar G. D., Cucinotta F. A., Braby L. A. and Konradi A. (1994), Radiat. Meas. 139, 344.
3. Badhwar G. D., Konradi A., Atwell., Golightly M. J., Cutinotta F. A., Willson J. W., Petrov V. M., Tchernykh I. V., Shurshakov V. A. and Lobokov A. P. (1996), Radiat. Meas. 26, 147.
4. Benton E. V. (1968), Report USNRDL-TR-68-14, US Naval Radiological Defense Laboratory, San Francisco, U.S.A.
5. Benton E. V., Ogura K., Frank A. L., Atallah T. M. and Rowe V. (1986), Nucl. Tracks Radiat. Meas. 12, 79.