1. Standard Methods for the Examination of Water and Waster,1995
2. Comparative study of titimetric methods for determination of organic carbon in soils, compost and sludge;Angelova VR;J Int Sci Public: Ecol Safety,2014
3. Evaluation of accuracy in photometric analysis;Ayres GG;Anal Chem,1949
4. Optimization of the liquid-liquid extraction of nicotine in ternary solvent;Aznar M;Cienc Eng,2008
5. Advances in physical organic chemistry;Bard AJ,1976