1. Conditioning in models with logs;Belsley,1983
2. Demeaning conditioning diagnostics through centering, and Reply;Belsley;Amer. Statist.,1984
3. Centering, the constant, first differencing and diagnosing collinearity;Belsley,1986
4. Regression Diagnostics: Identifying Sources of Influential Observations and Collinearity;Belsley,1980
5. Matrix Computations;Golub,1983