References
- Manahan , S. E. and Kunkel , R. R. Anal. Chem. (in press)
- Skoog , D. and West , D. 1969 . Fundamentals of Analytical Chemistry , Holt, Rinehart : Winston, Inc. .
- Risemen , J. H. 1973 . Am. Lab. , 4 : 63
- Manahan , S. E. and Kunkel , R. R. Anal. Chem. (in press)