The Nonferrous Metals Society of China
Minimum norm method of analyzing ill-conditioned state of design matrix in estimation of parameters
LUXiu-shan(卢秀山),OUJi-kun(欧吉坤),SONGShu-li(宋淑丽),FENGZun-de(冯尊德)
Transactions of Nonferrous Metals Society of China . 2003, (03): 724 -728 .