1. Colour reactions between sugars and diphenylamine-urea and diphenylamine-p-anisidine on paper chromatograms
2. J.E. Brekke, C.G. Cavaletto, A.E. Stafford, and H.T. Ghan, 1974 . Mango: Processed products. U.S. Dept. Agric. ARS Series. In press.
3. S. Dal Nogare, and R.S. Juvet, 1962 ". "Gas-Liquid Chromatography. Theory and Practice ," p. 256 . Interscience. New York and London.
4. M.B. Jacobs, 1958 ". "The Chemical Analysis of Foods and Food Products ," 3rd ed , p. 564 . D. Van Nostrand Co., New York.