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2. I. A. Viktorov, Rayleigh and Lamb Waves: Physical Theory and Applications (Nauka, Moscow, 1966; Plenum, New York, 1967).
3. E. Dieulesaint and D. Royer, Ondes Elastiques Dans Les Solides. Application au Traitement du Signal (Ed. Masson, Paris, 1974).
4. Surface Wave Filters. Design, Construction and Use, Ed. by H. Matthews (Wiley, New York, 1977).
5. J. D. Achenbach, Wave Propagation in Elastic Solids (North-Holland, Amsterdam, 1973).