REFERENCES
- Porwal N.K. Argekar A.A. Purohit P.J. Page A.G. Sastry M.D. : Fresenius Z. Anal. Chem. , 338 , 255 ( 1990 ).
- Goyal N. Purohit P.J. Page A.G. Sastry M.D. ; Fresenius J. Anal. Chem. , 354 , 311 ( 1996 ).
- Weast , R.C. , ed. 1970 . CRC Handbook of Chemistry and Physics , Ohio, U.S.A. : Chemical Rubber Company .
- Campbell W.C. Ottaway J.M. , Talanta , 21 , 837 ( 1974 ).
- Koch I. Harrington C.F. Reimer K.J. Cullen W.R. , Talanta , 44 , 771 ( 1997 ).