Textbook Fundamentals of Service Systems
http://fundamentals-of-service-systems.org/emailform.php?id=yNRI6Rmh2Th8bN8tNFaYTeip9Ix25IW%2Fxz8H%2FHGjlNq7LavqOWamvDieN6dpirFSabW4p3bZEF1z%2Fj8wQeND5AncdRK8ZLfCHYLy4vZX6SHDO3gDHxFIZe4v1unehvPKUw551lBFydlZZHewgPgtGw%3D%3D