Textbook Fundamentals of Service Systems
http://fundamentals-of-service-systems.org/emailform.php?id=JSXGQY0R252l%2Bo%2Bq8E3fta1Wh%2FyItfpR375h2WgwbazVo3wfiaJ1jfr46Wfm%2Bl%2BLs2dbhI0AenvwPCprzLQmOBxtFZfE0cby9gXeBle7FUnf4fjaKWYUrOECXixcCnAKd3lKRMAZg7AODCqN%2BuGZcw%3D%3D