1. N. N. Nikolaev, W. Schäfer, B. G. Zakharov, and V. R. Zoller, Zh. Éksp. Teor. Fiz. 124, 491 (2003) [JETP 97, 441 (2003)].
2. N. N. Nikolaev, W. Schäfer, B. G. Zakharov, and V. R. Zoller, Yad. Fiz. 68, 692 (2005) [Phys. At. Nucl. 68, 661 (2005)].
3. N. N. Nikolaev and W. Schäfer, Phys. Rev. D 71, 014023 (2005).
4. N. N. Nikolaev, W. Schäfer, and B. G. Zakharov, hep-ph/0502018.
5. N. N. Nikolaev, W. Schäfer, B. G. Zakharov, and V. R. Zoller, Phys. Rev. D 72, 034033 (2005).