1. AOAC 1990. Official Methods of Analysis. Association of Official Analytical Chemists, 15th edition, Washington DC, USA.
2. AOAC 1995. Official Methods of Analysis. Association of Official Analytical Chemists, 15th edition, Gaithersburg, MD,USA.
3. AOAC 2000. Official Methods of Analysis, Association of Analytical Chemists, 17th edition, Washington DC, USA.
4. AOAC 2005. Official Methods of Analysis, Association of Official Analytical Chemists, 18th edition, Gaithersburg, MD, USA.
5. Castro I, Goncalves O, Teixeira J A and Vicente AA 2002. Comparative study of selva and camarosa strawberries for the