1. For the future perspectives utilizing heavy nuclear beams in the Large Hadron Collider, please see the lectures in this School of P. Giubellino.
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3. A.R. Bodmer, Phys. Rev. D4, 1601 (1971).
4. G. Baym and S.A. Chin, Phys. Lett. 62B, 241 (1976).
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