1. Quate, C.F., Atalar, A. and Wickramasinghe, H.K.: “Acoustic Microscopy with Mechanical Scanning - A Review”, Proc. IEEE, Vol. 67, pp. 1092–1114, 1979.
2. Farnell, G.W. and Jen, C.K.: “Planar Acoustic Microscopy Lens Using Rayleigh to Compressional Conversion”, Elec. Lett., Vol. 16, pp. 541–543, 1980.
3. Farnell, G.W. and Jen, C.K.: “Experiments with the Planar Acoustic Microscope Lens”, Proc. IEEE Ultrasonics Symposium, pp. 547–551, 1981.
4. Toda, K. and Murata, Y.: “Acoustic Focusing Device with an Interdigital Transducer”, J. Acoust. Soc. Am., Vol 61, pp. 1033–1036, 1977.
5. Ristic, V.M. and Hussein, A.: “Surface Charge and Field Distribution in a Finite SAW Transducer”, IEEE Trans. MTT, Vol. MTT-27, pp. 897–901, 1979.