1. M. Bozzo et al., Phys. Lett. 147B (1984) 392.
2. U. Amaldi et a1., Phys. Lett. 66B (1977) 390.
3. A. Martin in: Proc. Fourth Topical Workshop on pp Collider Physics, Bern, 1984, p.308;
4. C. Bourrely, A. Martin in: Proc.of the ECFA-CERN Workshop on Large Hadron Collider in the LEP Tunnel, held at Lausanne and Geneva, 1984, p.323. M.Haguenauer, G.Matthiae, ibid. p.303.
5. M.M. Block and R.N. Cahn, in “Strong Interactions and Gauge Theories,” Proceedings of 21st Recontre de Moriond, Les Ares, France, 1986, edited by Tran Thanh Van (Editions Frontiére, Gif-sur-Yvette, 1986), Vol. 2, p.679.