This author has not been identified. Look up 'Dietmar Jannach' in GoogleThis author has not been identified. Look up 'Thomas Schmitz' in GoogleThis author has not been identified. Look up 'Birgit Hofer' in GoogleThis author has not been identified. Look up 'Konstantin Schekotihin' in GoogleThis author has not been identified. Look up 'Patrick W. Koch' in GoogleThis author has not been identified. Look up 'Franz Wotawa' in Google