1. Hunter, F. E., Davis, J., and Carlat, L., Biochim. Biophys. Acta, 20, 237 (1956).
2. Lehninger, A. L., and Ray, B. L., Biochim. Biophys. Acta, 26, 643 (1957).
3. Raaflaub, J., Helv. Physiol. Pharmacol. Acta, 11, 142 (1953).
4. Tapley, D. F., J. Biol. Chem., 222, 325 (1956).
5. Ernster, L., Jalling, O., Löw, H., and Lindberg, O., Exp. Cell Res., Supp. 3, 124 (1955).