This author has not been identified. Look up 'Chen Qu' in GoogleThis author has not been identified. Look up 'Du-yan Bi' in GoogleThis author has not been identified. Look up 'Ping Sui' in GoogleThis author has not been identified. Look up 'Ai-Nong Chao' in GoogleThis author has not been identified. Look up 'Yun-Fei Wang' in Google