1. ZHANG Xian-da, BAO Zheng. Non-stationary Signal Analysis and Processing [M]. Beijing: Defence Industry Press, 1998. (in Chinese)
2. WANG Hong-yu. Non-stationary Random Signal Analysis and Processing [M]. Beijing: Defence Industry Press, 1999. (in Chinese)
3. HE Jun, YU Ya-lun, LIANG Wen-ji. Wavelet analysis for blasting seismic signals [J]. Chinese J of Geotechnical Engineering, 1998, 20(1): 47–50. (in Chinese)
4. Charles K, Chu I. An Introduction to Wavelets [M]. Academic Press Inc, 1992.
5. Cohen L. Time-Frequency Analysis: Theory and Application [M]. Prentice-Hall, 1995.