I would like to dedicate this book to my wife, Chryl, who has encouraged me and supported me in its preparation.

—Stephen H. Kaisler

I would like to thank my wife, Delphine Clegg, for her support and encouragement in preparing this book.

—J. Alberto Espinosa

To my wife, Rose, my parents, my children, and my grandchild: you make everything beautiful.

—Frank Armour

To my wonderful wife, Libby, whose continuous support and strength allow me to devote more energy to research and writing, and to my daughter, Katy, whose enduring dedication and commitment have taught me how to successfully close a project.

—William H. Money