1. Butenandt, A., Z. angew. Chem., 44, 905 (1931). Butenandt, A., and Tscherning, K., Z. physiol. Chem., 229, 167 (1934).
2. Callow, N. H., Biochem. J., 33, 559 (1939). Dorfman, R. I., Cook, J. W., and Hamilton, J. B., J. Biol. Chem., 130, 285 (1939). Dobriner, K., and Lieberman, S., in Gordon, E. S., “A Symposium on Steroid Hormones”, 46 (University of Wisconsin Press, Madison, 1950).
3. Talalay, P., Dobson, M. M., and Tapley, D. F., Nature, 170, 620 (1952).
4. Talalay, P., and Dobson, M. M., J. Biol. Chem., 205, 823 (1953).