This author has not been identified. Look up 'Christian Rogaß' in GoogleThis author has not been identified. Look up 'Daniel Spengler' in GoogleThis author has not been identified. Look up 'Mathias Bochow' in GoogleThis author has not been identified. Look up 'Karl Segl' in GoogleThis author has not been identified. Look up 'Angela Lausch' in GoogleThis author has not been identified. Look up 'Daniel Doktor' in GoogleThis author has not been identified. Look up 'Sigrid Roessner' in GoogleThis author has not been identified. Look up 'Robert Behling' in GoogleThis author has not been identified. Look up 'Hans-Ulrich Wetzel' in GoogleThis author has not been identified. Look up 'Hermann Kaufmann' in Google