8. See Chapters 8 and 9 in Edward I. Altman, Corporate Financial Distress and Bankruptcy: A Complete Guide to Predicting and Avoiding Distress and Profiting from Bankruptcy, 2d ed. (Hoboken, NJ: Wiley, 1993).

9. Edward I. Altman, “Financial Bankruptcies, Discriminant Analysis and the Prediction of Corporate Bankruptcy,” Journal of Finance (September 1968), pp. 589–609.

10. Edward I. Altman, Robert G. Haldeman, and Paul Narayann, “Zeta Analysis: A New Model to Identify Bankruptcy Risk of Corporations,” Journal of Banking and Finance (June 1977), pp. 29–54.