1. R. Aurich, J. Bolte and F. Steiner, Universal Signatures of Quantum Chaos, Phys. Rev. Lett.
73 (1994), 1356–1359.
2. R. Aurich and J. Marklof, Trace Formulae for Three-Dimensional Hyperbolic Lattices and Application to Strongly Chaotic Systems, Physica
D 92 (1996), 101–129.
3. R. Aurich, F. Scheffler and F. Steiner, On the Subtleties of Arithmetical Quantum Chaos, Phys. Rev.
E 51 (1995), 4173–4202.
4. R. Aurich and F. Steiner, Energy-Level Statistics of the Hadamard-Gutzwiller Ensemble, Physica
D 43 (1990), 155–180.
5. A. BäCker, F. Steiner and P. Stifter, Spectral Statistics in the Quantized Cardioid Billiard, Phys. Rev.
E 52 (1995), 2463–2472.