"""Desel and Esparza's book is interesting and well-written, and, to the best of my knowledge, it is the most recent and complete reference to free-choice Petri nets available....I would definitely recommend this book to anyone who is studying free-choice nets. They will discover a good overview of all the important results in the field over the past 20 years. I also recommend this book to researchers and practitioners interested in Petri nets, since they will probably increase their knowledge of this topic."" M. Pezze, Computing Reviews"