From the reviews of the first edition:

„This is an application-oriented book that is intended for engineers, graduate students, and researchers who are interested in the design of nonlinear controllers for underactuated mechanical systems. … Non-linear Control for Underactuated Mechanical Systems is an excellent source for the development of control strategies for an important class of problems, viz, the underactuated mechanical systems. The book is clearly written, and the ideas are conveyed well by the authors. … It is strongly recommended for individuals and libraries.“ (SC Sinha, Applied Mechanics Reviews, Vol. 55 (4), 2002)