References
- Hoerl , Arthur E. and Kennard , Robert W. 1970 . Ridge regression: biased estimation for nonorthogonal problems . Technometrics , 12 : 55 – 67 .
- Sommers , R. W. Sound application of regression analysis in chemical engineering . Presented at A.I.Ch.E. Symposium on Avoiding Pitfalls in Engineering Applications of Statistical Methods . Memphis , Tenn. .