This author has not been identified. Look up 'Caigui Jiang' in GoogleThis author has not been identified. Look up 'Florian Rist' in GoogleThis author has not been identified. Look up 'Hui Wang 0064' in GoogleThis author has not been identified. Look up 'Johannes Wallner 0001' in GoogleThis author has not been identified. Look up 'Helmut Pottmann' in Google