Bernd Stauss holds the first German chair for services management at the Ingolstadt School of Management of the Catholic University Eichstaett-Ingolstadt, Germany. The focus of his interests are in management issues that emerge in the context of the production and marketing of services for internal and external customers. Wolfgang Seidel received his master's degree in business administration from the University of Bayreuth (Germany) and was then research assistant with Prof. Dr. Bernd Stauss. He is founder of "Servmark", a consulting company with the focus on topics in the field of the analysis, conception and implementation of complaint management, customer relationship management and services marketing. Wolfgang Seidel is frequent speaker at major conferences on complaint management and customer relationship management both in Europe and the USA.