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2. Association of Official Analytical Chemists (1984) Official Methods of Analysis of the Association of Official Analytical Chemists. Section 43.014-43.017 Carotenes in Fresh Plant Materials and Silages Spectrophotometric Method Final Action, 14th edn. The Association of Official Analytical Chemists, Inc., Arlington, VA.
3. Bauernfeind, J. C. (1981) Carotenoids as Colorants and Vitamin A Precursors. Technological and Nutritional Applications. Academic Press, New York.
4. Separation of carotenoids in fruits and vegetables by high performance liquid chromatography;Bushway;Journal of Liquid Chromatography,1985
5. Determination of α- and β-carotene in fruit and vegetables by HPLC;Bushway;Canadian Institute of Food Science and Technology Journal,1982