1. J. Aron, S.K. Chang, R. Dworak, et al. Sonic compressional measurements while drilling, in: Proceedings of SPWLA 35th Annual Logging Symposium, 1994.
2. J.V. Leggett III, V. Dubinsky, D. Patterson, Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers, U.S. Patent No. 6614360, 2003.
3. T. Kinoshita, T. Endo, H. Nakajima, et al. Next generation LWD sonic tool, in: Proceedings of 14th SPWLA Formation Evaluation Symposium of Japan, 2008.
4. X.M. Tang, T. Wang, D. Patterson, Multipole acoustic logging-while- drilling, in: Proceedings of SEG Annual Meeting, Society of Exploration Geophysicists, 2002.
5. Theoretical and numerical study of modified Biot’s models, acoustoelectric well logging and acoustic logging while drilling excited by multipole acoustic sources;Cui,2004