ADDITIONAL REFERENCES
- Belsley , D. A. , Kuh , E. and Welsch , R. E. 1980 . Regression Diagnostics New York : John Wiley. .
- Cook , D. R. and Weisberg , S. 1982 . Residuals and Influences in Regression New York : Chapman and Hall. .
- Efron , B. and Tibshirani , R. 1986 . “Bootstrap Methods for Standard Errors, Confidence Intervals, and Other Measures of Statistical Accuracy,” . Statistical Science , 1 : 54 – 77 .