1. L. G. Landsberg, Yad. Fiz. 57, 47 (1994) [Phys. At. Nucl. 57, 42 (1994)].
2. L. G. Landsberg, Usp. Fiz. Nauk 164, 1129 (1994) [Phys.-Usp. 37, 1043 (1994)].
3. Particle Data Group, Eur. Phys. J. (2000).
4. V. V. Vladimirsky, V. K. Grigor'ev, O. N. Erofeeva, et al., Yad. Fiz. 64, 1979 (2001) [Phys. At. Nucl. 64, 1895 (2001)].
5. V. K. Grygor'ev, O. N. Baloshin, B. P. Barkov, et al., Yad. Fiz. 62, 513 (1999) [Phys. At. Nucl. 62, 470 (1999)].