"This book presents this theory as well as the physical insights, causal mechanisms, and practical application. It makes the subject accessible and useful for a variety of disciplines in engineering and experimental physical science."-LaDoc STI (Science, Technology & Industry), Bulletin of the Librairie Lavoisier ( Lavoisier Bookstore), France"This readable book can be used for self-study or in classroom situations…Recommended.'- R.G. Jeffers, University of Connecticut in CHOICE, September 1999