1. I.M. Dremin et al., Yad. Fiz. 52, 840 (1990) [Sov. J. Nucl. Phys.52 536 (1990)] [Sov. J. Nucl. Phys. 52 536 (1990)]
2. Mod. Phys. Lett. A 5 1743 (1990).
3. N.M. Agababyan et al., NA22 Collab. Phys. Lett. B. 389, 397 (1996)
4. A.B. Apanasenko et al., Pis’ma v ZhETF30, 157 (1979)
5. Peschanski R. 1992 XXII Int. Symp. On Multiparticle Dynamics(1992 Santiago di Compostella, Spain)