6Engineering News - Record, 2003,2002 ENR top 225 international contractors.
7Engineering News - Record, 2003,2002 ENR top 225 GLOBAL contractors.
8Altman Edward, Anthony Saunders. Credit risk measurement: developments over the last 20 years [J].Journal of Banking & Finance, 1998,(4):1721~1742.
9Altman Edward . Financial Ratios: Discriminant Analysis and the Prediction of Corporate Bankruptcy [J]. Journal of finance, 1968,23, (4):589~609.
10Altman Edward . Haldeman, R,Narayanan, P..Zeta Analysis: a new Model to Identify Bankruptcy Risk of Corporations [J]. Journal of Banking and Finance, 1977,1(1):29~51.