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4. Doi, T., Hiroe, M. and Kaku, J., A study on the measurement of sound radiated from a high-speed moving source, Proceedings of the Spring Meeting of Acoustic Society of Japan (1997), pp.739-740 (in Japanese).
5. Duhamel, D., Efficient calculation of the three-dimensional sound pressure field around a noise barrier, Journal of Sound and Vibration, Vol.197, No.5 (1996), pp.547-571.