1. K. Abe et al. (Belle Collaboration), arXiv:0710.2577.
2. W.-M. Yao et al. (Particle Data Group), J. Phys. G: Nucl. Part. Phys. 32, 1 (2006).
3. Yu. A. Simonov, arXiv: 0711,3626, Phys. At. Nucl. (in press).
4. Yu. A. Simonov, JETP Lett. 87, 147 (2008).
5. Yu. A. Simonov and A. I. Veselov, arXiv:0804.4635.