From the reviews: "This memoir develops the theory of Composite Asymptotic Expansions ... . The book is very technical, but written in a clear and precise style. The notions are well motivated, and many examples are given. ... this book will be of great interest to people studying asymptotics for singularly perturbed differential equations." (Jorge Mozo Fernandez, Mathematical Reviews, December, 2013) "This book focuses on the theory of composite asymptotic expansions for functions of two variables when functions of one variable and functions of the quotient of these two variables are used at the same time. ... The book addresses graduate students and researchers in asymptotic analysis and applications." (Vladimir Sobolev, zbMATH, Vol. 1269, 2013)