Observations of fractal patterns induced in thin solid films by ion irradiation
B. X. Liu, L. J. Huang, K. Tao, C. H. Shang, and H. D. Li
Phys. Rev. Lett. 59, 745 (1987) - Published 17 August, 1987
Semiclassical quantization of classically chaotic systems
John R. Klauder
Phys. Rev. Lett. 59, 748 (1987) - Published 17 August, 1987