11R3. Perturbation Methods for Differential Equations. - BK Shivamoggi (Dept of Math, Univ of Central Florida, Orlando FL 32816-1364). Birkhauser Boston, Cambridge MA. 2003. 354 pp. ISBN 0-8176-4189-0. \$59.95.

Reviewed by J Awrejcewicz (Dept of Autom and Biomech, Tech Univ of Lodz, 1/15 Stefanowskiego St, Lodz, 90-924, Poland).

This book is focused on perturbation methods mainly applied to solve both ordinary and partial differential equations, as its title implies. As explained by the author, one of the unusual features of the treatment is motivated by his lecture notes devoted to a mix of students in applied mathematics, physics and engineering. Therefore, it is intended to serve as a textbook for both undergraduale students of the previously mentioned branches of science. However, I wonder if the students will be able to understand fully physical aspects of many various examples of completely...