1. Akaike, H., Likelihood and the Bayes procedure, in Bayesian Statistics, edited by J. M. Bernard, M. H. Degroot, D. V. Lindley, and A. F. M. Smith, pp. 143–166, University Press, Valencia, Spain, 1980.
2. Berry, M. J. and G. F. West, An interpretation of the first arrival data of the Lake Superior experiment by the time-term method, Bull. Seism. Soc. Am., 56, 141–171, 1966.
3. Červeny, V, I. A. Moltkov, and I. Psencik, Ray Method in Seismology, 214 pp., Univerzita, Karlova, Prague, 1977.
4. Hearn, T. M. and R. W. Clayton, Lateral velocity variations in southern California. I., Results for the upper crust from Pg waves, Bull. Seism. Soc. Am., 76, 495–509, 1986.
5. Iwasaki, T., Ray-tracing program for study of velocity structure by ocean bottomseismographic profiling, J. Seismol. Soc. Jpn., 41, 263–266, 1989 (in Japanese).