This author has not been identified. It may be one of the following persons: Look up 'Philip Langer' in GoogleThis author has not been identified. Look up 'Konrad Wieland' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Manuel Wimmer' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Jordi Cabot' in Google