From the reviews: "The book consists of 10 chapters and four appendices. … Undoubtedly, the monograph will be useful for postgraduate students." (Sergei Georgievich Zhuravlev, Zentralblatt MATH, Vol. 1122 (24), 2007) "The book by Sylvio Ferraz-Mello provides a deep insight in perturbation theories. … the mathematical presentation of the different facets is always ... Read moreaccompanied by a number of case studies and examples. Such peculiarity makes the book unique … . Thanks to the … author, the book is recommended for both teaching and research purposes: the didactical and self-contained aspects address the book to advanced undergraduate students; the researchers in Dynamical Systems and Celestial Mechanics will certainly enjoy the excellent and deep presentation of perturbation theories." (Alessandra Celletti, Celestial Mechanics and Dynamical Astronomy, Vol. 100 (4), 2008) "The purpose of this book is … ‘to deal with the perturbation theories used in Celestial Mechanics, but they should be presented in a universal way, so as to be understandable by investigators and students from related fields of science.’ In other words, one does not need a special background in astronomy to read and understand the book. … a large number of the examples will be of interest to people working in Hamiltonian theory. … a valuable source of material on conservative systems." (Ferdinand Verhulst, SIAM Review, Vol. 50 (2), 2008) Show Less