M. C. Gutzwiller, 1971, J. Math. Phys., 12, 343, 10.1063/1.1665596
M. V. Berry, 1976, Proc. Roy. Soc. London, Ser. A, 349, 101, 10.1098/rspa.1976.0062
M. V. Berry, 1977, J. Phys. A, 10, 371, 10.1088/0305-4470/10/3/009
M. V. Berry, 1981, Ann. Phys. (N.Y.), 131, 217, 10.1016/0003-4916(81)90189-5
R. Balian, 1974, Ann. Phys. (N.Y.), 85, 514, 10.1016/0003-4916(74)90421-7
D. A. Hejhal, 1983, The Selberg Trace Formula for PSL (2, R), Parts 1 and 2, Springer Lecture Notes in Mathematics, 10.1007/BFb0061302
S. W. McDonald, 1979, Phys. Rev. Lett., 42, 1189, 10.1103/PhysRevLett.42.1189
E. J. Heller, Proceedings of the NATO Conference on Quantum Chaos
V. I. Arnold, 1968, Ergodic Problems of Classical Mechanics
E. J. Heller, 1976, J. Chem. Phys., 65, 4979, 10.1063/1.432974
K. Hepp, 1974, Commun. Math. Phys., 35, 265, 10.1007/BF01646348
G. A. Hagedorn, 1980, Commun. Math. Phys., 71, 77, 10.1007/BF01230088
E. J. Heller, 1980, J. Chem. Phys., 73, 4720, 10.1063/1.440005
E. J. Heller, 1980, J. Chem. Phys., 72, 1337, 10.1063/1.439197
M. V. Berry, 1981, Chaotic Behavior of Deterministic Systems
A. Voros, 1979, Springer Lecture Notes in Physics
R. D. Taylor, 1983, Faraday Discuss. Chem. Soc., 75, 170, 10.1039/dc9837500117
M. C. Gutzwiller, 1982, Physica (Utrecht), 5D, 183