1. A.I. Machavariani and A. Fäßler: In Preparation
2. A.I. Machavariani: Phys. Part. Nucl. (Sov. J. Part. Nucl.) 24 (3), 317 (1993)
3. A.I. Machavariani and A. Fäßler: nucl-th/0202060 (to be published)
4. A.I. Machavariani: Phys. Lett. B540, 81 (2002)