"The book browses rapidly in the first chapters into different aspects of wave propagation in many different materials, considering anisotropy, heterogeneity and higher-order continua. It then deals with a large list of more specific aspects at the forefront of current research. The book will be of interest both to top-level researchers and to students wishing to get of broad view of up-to-date research topics in wave propagation."— Régis Cottereau, CNRS, CentraleSupélec, Université Paris-Saclay, France"The book provides a self-contained exposition of elastic wave propagation in material and structures. Besides covering the general background on elastic wave propagation, it covers a wide variety of interesting applications of wave propagation in different types of wave guides and nano structures. There are many interesting chapters covering important applications such as wave propagation in composite structures, nanostructures and in materials including electric and magnetic regions. There is also an interesting chapter on wave propagation in uncertain wave guides using Monte Carlo simulations. Overall, the book can serve as an excellent reference book for both engineers and applied mathematicians."—Kristian Sandberg, Computational Solutions, Inc.The main strength in this book is the brief but very effective fundamentals that one must know or recapitulate before understand the harder materials on wave propagation. The breath and deepness in the material covered is quite valuable for graduate students those who will embark on the journey with acoustic or ultrasonic wave propagation. Particularly I like the concept of stitching the wave propagation in classical media, waves in periodic media, wave in micro to nano scale structures and very wide topics but brief fundamentals together in to a one chain."— Sourav Banerjee, University of South Carolina, USA