This author has not been identified. Look up 'Jana Hutter' in GoogleThis author has not been identified. Look up 'Peter Schmitt' in GoogleThis author has not been identified. Look up 'Marc Saake' in GoogleThis author has not been identified. Look up 'Axel Stubinger' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Robert Grimm' in GoogleThis author has not been identified. Look up 'Christoph Forman' in GoogleThis author has not been identified. Look up 'Andreas Greiser' in GoogleThis author has not been identified. Look up 'Joachim Hornegger' in GoogleThis author has not been identified. Look up 'Andreas K. Maier' in Google