1. Trower, W.P., Va. J. Sci., 1993, vol. 44, p. 293.
2. Knapp, E.A., Moler, R.B., Saunders, A.W., and Trower, W.P., Appl. Radiat. Isot., 2000, vol. 53, p. 711.
3. Karev, A.I., Raevsky, V.G., Dzhilavyan, L.Z., Brothers, L.J., and Wilhide, L.K., RF Patent 2444003, Byull. Izobret., 2012, no. 6; Karev, A.I., Raevsky, V.G., Dzhilavyan, L.Z., Brothers, L.J., and Wilhide, L.K., US Patent 8582712, 2013.
4. http://nucleardata.nuclear.lu.se/toi/.
5. Cook, B.C., Phys. Rev., 1957, vol. 106, p. 300.