This author has not been identified. Look up 'Qingzhong Liu' in GoogleThis author has not been identified. Look up 'Andrew H. Sung' in GoogleThis author has not been identified. Look up 'Mengyu Qiao' in GoogleThis author has not been identified. Look up 'Zhongxue Chen' in GoogleThis author has not been identified. Look up 'Bernardete Ribeiro' in Google