References
- Hoadley , A. B. and Kettenring , J. R. 1990 . “Communications Between Statisticians and Engineers/Physical Scientists” . Technometrics , 32 : 243 – 274 . (with discussion)
- Salas , S. L. and Hille , E. 1990 . Calculus, One and Several Variables, , 6th ed. , New York : John Wiley .