Wave Motion 25 (1997) 403-404 Contents of Volume 25 Vol. 25, No. 1 C.J. Nolan and W.W. Symes Anomalous reflections near a caustic Y.-G. Zhang and J. Ballmann Two techniques for the absorption of elastic waves using an artificial transition layer A.N. Darinskii On the theory of leaky waves in crystals M. Deschamps, B. Poirée and O. Poncelet Energy velocity of complex harmonic plane waves in viscous fluids E. Scarpetta and M.A. Sumbatyan On wave propagation in elastic solids with a doubly periodic array of cracks S. Hazanoy On shock waves in materials with memory M. Belishev, A. Blagovestchenskii and S. Ivanov The two-velocity dynamical system: boundary control of waves and inverse problems Vol. 25, No. 2 Z. Jianfeng and L. Youming Numerical simulation of elastic wave propagation in inhomogeneous media A.N. Norris and T. B. Hansen Exact complex source representations of time-harmonic radiation O.A. Godin Reciprocity and energy theorems for waves in a compressible inhomogeneous moving fluid M.P. Coleman Analysis of vibration by the wave propagation method and Bolotin’s method for a rectangular thin plate with at least one side roller-supported P. Bajons and W. Fritsch Longitudinal standing waves in compound bars and rods K. Watanabe and R.G. Payton SH wave in a cylindrically anisotropic elastic solid: A general solution for a point source Vol. 25, No. 3 P. Zinin, W. Weise, O. Lobkis and S. Boseck The theory of three-dimensional imaging of strong scatterers in scanning acoustic microscopy C. Zhang and R.J. LeVeque The immersed interface method for acoustic wave equations with discontinuous coefficients M.D. Collins, J.F. Lingevitch and W.L. Siegmann Wave propagation in poro-acoustic media J. Miles and R. Salmon On the vorticity of long gravity waves in water of variable depth (Continued overleaf) 404 Contents of Volume 25 S.P. Decent and A. D.D. Craik On limit cycles arising from the parametric excitation of standing Waves .....00 c. ce ee. ee. ee e.e ee. ee e.ee e.ee ee0e ee nes 275 Y. Zhang and S.-P. Zhu a RMR r le S h i. il Lec eiie sib eet Whekevethdbbebeneweeecidbhsdween o i 295 Vol. 25, No. 4 K. Watanabe and R.G. Payton Scalar wave analysis of distributed and moving sources by means of Huygensconstruction .......00. ce.ce. e.ee. ee.e e ee 303 Rakesh Potential inversion from transmission data for the one-dimensional, wave equation ........0.c .c.e e.e e.ee. ee.e e0e e 319 A.L. Shuvalov and J. Lothe The Stroh formalism and the reciprocity properties of reflection—transmission problems in crystal piezo-acoustics ........... 331 VI. Alshits and P. Chadwick Concavities on the zonal slowness section of a transversely isotropic elastic material ........0.c c.ec.e c.e0ce0 e.ee. ee e 347 J.F. Clouet and J.P. Fouque A time-reversal method for an acoustical pulse propagating in randomly layered media ...........0.00.: e.e e.e .ee. e0en s 361 N. Peake The scattering of vorticity waves by a supersonic rectangular wing ....0.. cece. cec.e c.ece .eee .eee. ee .et ee .ee ee ees 369 G.A. Harmain, J.L. Wegner, J. Su and J.B. Haddow es. sc nes ose 8s PKS ELS TUSEANE TERS Oden UOeTS cobeeeeevebseenetevers 385