“The style of the presentation is enthusiastic, highlighting that the field of study presented is promising. … In summary, the present book provides an extensive, detailed, and well-written presentation of the field of piecewise-smooth systems whose complete study will allow the interested reader to move from novice to professional.” (Jesús M. González-Miranda, Mathematical Reviews, October, 2019)“Jeffrey’s book seems ideally suited for a masters-level sem-inar course in which students present the book chapter-by-chapter to each other. … I can definitely recommend Jeffrey’s book for anyone looking to learn more about nonsmooth dynamical systems. … this book is one little puzzle piece that might hopefully motivate mathematicians of various interests to refine and extend methods in the vibrant area of applied dynamical systems.” (Christian Kuehn, SIAM Review, Vol. 61 (3), September, 2019)