This author has not been identified. Look up 'Armin Seyfried' in GoogleThis author has not been identified. Look up 'Oliver Passon' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Bernhard Steffen' in GoogleThis author has not been identified. Look up 'Maik Boltes' in GoogleThis author has not been identified. Look up 'Tobias Rupprecht' in GoogleThis author has not been identified. Look up 'Wolfram Klingsch' in Google