1. E. Wigner, Can. Math. Congr. Proc. (University of Toronto Press) p. 174 and other papers reprinted in Ref. [2]
2. Statistical Theories of Spectra: Fluctuations;Porter,1965
3. Random Matrices;Mehta,1991
4. Two Dimensional Quantum Gravity and Random Surfaces,1992
5. Planar diagrams