Many of the chapters are written by leaders in their field and thus provide both good foundational descriptions as well as up-to-date accounts of the state of the field. ... the book does well throughout: providing a better than skin-deep introduction to a subject, focusing on the core issues within a field and providing references to enable more detailed investigation. ... It brings together much of the most important literature into an easily accessible form. Written by leaders in their respective fields, this book would be a valuable addition to the collection of researchers, engineers and clinicians alike. -Peter R.T. Munro, Contemporary Physics, 2011