1. Ovchinnikov, B.M., Razin, V.I., Reshetin, A.I., and Filirrov, S.N., Prib. Tekh. Eksp., 2010, no. 2, p. 41 [Instrum. Exp. Tekh. (Engl.Transl.), 2010, no. 2, p. 194].
2. Ovchinnikov, B.M., Parusov, V.V., and Ovchinnikov, Yu.B., arXiv: 1003.1240.
3. Shalem, C., Chechik, R., Breskin, A., and Michaeli, K., Nucl. Instrum. Methods Phys. Res., 2006, vol. A558, p. 475.
4. Ovchinnikov, B.M. and Parusov, V.V., J. Astroparticle Phys., 1999, vol. 10, p. 129.
5. Ovchinnikov, B.M. and Parusov, V.V., Preprint of Inst. of Nucl. Research, Russ. Acad. Sci., Moscow, 1999, no. 1008/99.