1. Wieth, J. O., Dalmark, M., Gunn, R. B., and Tosteson, D. C., Intern. Symp. Metabolism and Membrane Permeability of Erythrocytes, Thrombocytes and Leucocytes, Vienna, 1972 (edit. by Gerlach, E., Moser, K., Wilmanns, W., and Deutsch, E.), 71 (Thieme, Stuttgart, 1972).
2. Harris, E. J., and Pressman, B. C., Nature, 216, 918 (1967).
3. Glynn, I. M., Hoffman, J. F., and Lew, V. L., Phil. Trans. Roy. Soc., B, 262, 91 (1971).
4. Finkelstein, A., and Cass, A., J. Gen. Physiol., 52 (1). Pt. 2, 145s (1968).
5. Lampen, J. O., in Biochemical Studies of Antimicrobial Drugs (edit. by Newton, B. A., and Reynolds, P. E.), 111 (Soc. Gen. Microbiol., Cambridge, 1966).