This author has not been identified. Look up 'Manuel Rigger' in GoogleThis author has not been identified. Look up 'Rene Mayrhofer' in GoogleThis author has not been identified. Look up 'Roland Schatz' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Matthias Grimmer' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Hanspeter Mössenböck' in Google