6Cheng C H and Toksoz M. Elastic Wave Propagation in a Fluid-filled Borehole and Synthetic Acoustic Logs. Geophysics, 1981,46(7) : 1042-1053.
7Kurkjian A L and Chang S K. Acoustic Multipole Sources in Fluid-filled Boreholes. Geophysics, 1986,51(1) : 148-163.
8Lang S W and Kurkjian A L, et al.. Estimating Slowness Dispersion From Arrays of Sonic Logging Waveforms. Geophysics, 1987,52(4) : 530-544.
9Hsu K and Esmersoy C. Parametric Estimation of Phase and Group Slowness from Sonic Logging Waveforms. Geophysics, 1992,57(8) :978-985.
10Fitting D W and Ader L. Ultrasonic Spectral Analysis for Nondestructive Evaluation. New York:A Division of Plemun Publishing Corporation. 1981 : 78-81.