1. Blackburn, S. (1968) Amino Acid Determination, Methods and Techniques, Marcel Dekker Inc., New York.
2. Ingram, V.M. (1963)Methods in Enzymology,6, 225 and 831.
3. Penke, B., Ferenczi, R. and Kovacs, K. (1974)Anal. Biochem,60, 45.
4. Liu, T.Y. and Chang, Y.H. (1971)J. Biol. Chem,246, 2842.
5. Simpson, R.J., Neuberger, M.R. and Liu, T.Y. (1976)J. Biol. Chem,251, 1936.