1. Ben Gera, I. and Norris, K. H., 1968, Determination of moisture content in soybeans by direct spectrophotometry, Israel J. Agric. Res. 18:125.
2. Birth, G. S., 1960, A nondestructive technique for detecting internal discolorations in potatoes, Amer. Potato J. 37:53.
3. Birth, G. S. and Olsen, K. L., 1964, Nondestructive detection of water core in Delicious apples, Proc. Amer. Soc. Hort. Sci. 85:74.
4. Birth G. S. and Norris, K. H., 1965, The difference meter for measuring interior quality of foods and pigments in biological tissues, USDA Tech. Bull. No. 1341.
5. Butler, W. L. and Norris, K. H., 1960, The spectrophotometry of dense light-scattering material, Arch. Biochem. and Biophys. 87:31.