1. J. Maldacena, The large-N limit of superconformal field theories and supergravity, hep-th/9711200.
2. S.S. Gubser, I.R. Klebanov and A.M. Polyakov, Gauge theory correlators from non-critical string theory, hep-th/9802109.
3. E. Witten, Anti-de Sitter space and holography, hep-th/9802150.
4. G. 't Hooft, Dimensional reduction in quantum gravity, gr-qc/9310006.
5. The world as a hologram;Susskind;J. Math. Phys.,1995