Distribution of Energy Eigenvalues in the Irregular Spectrum
Philip Pechukas
Phys. Rev. Lett. 51, 943 (1983) - Published 12 September, 1983
Quantum Kolmogorov-Arnol'd-Moser-like Theorem: Fundamentals of Localization in Quantum Theory
Gabriel Hose and Howard S. Taylor
Phys. Rev. Lett. 51, 947 (1983) - Published 12 September, 1983