This book applied the techniques of dynamical systems and bifurcation
theories to the study of nonlinear oscillations. Taking the cue from
Poincare, the authors stress the geometrical and topological properties
of solutions of differential equations and iterated maps. Numerous
exercises, some of which require nontrivial algebraic manipulations and
computer work, convey the important analytical underpinnings of problems
in dynamical systems and help the reader develop an intuitive feel for
the properties involved.