1. Cook, Elton, paper presented at the 143rd meeting of the American Chemical Society, January 14, 1963; discussion found in Chem. Eng. News 41:44, January 21, 1963.
2. Smith, Sister M. Justa, and Elton S. Cook, paper presented at 2nd Biomagnetic Symposium, Chicago, Illinois, November 29, 1963.
3. Erlanger, B.F., N. Kokowsky, and W. Cohen, Arch. Biochem. Biophys. 95:271, 1961.
4. Smillie, L.B., Biochim. Biophys. Acta 34:548, 1959.
5. Koshland, D.E., Jr., Science 142:1533, 1963.