Singular Perturbation Theory Mathematical and Analytical Techniques with Applications to Engineering

From the reviews:

"It is based on material taught by the author … and is very much a textbook, filled with a very large number of worked examples and end-of-chapter exercises, with answers and hints for the latter in the back of the book. … Appropriate references are cited throughout the book. … It would be an excellent text for an applied mathematics course on singular perturbations. Its accessibility and clarity would make it equally valuable to someone not familiar with the subject … ." (Stanley A. Berger, AIAA Journal, Vol. 44 (4), 2006)