1. Bangham, A. D., and Hancock, J. L. (1955). Nature (Lond.), 176, 656.
2. Human Blood Coagulation and its Disorders;Biggs, R.; Macfarlane, R.G.,1957
3. Chargaff, E., Ziff, M., and Cohen, S. S. (1940). J. biol. Chenm., 136, 257.
4. Crosbie, A., and Scarborough, H. (1941). Brit. med. J., 1, 268. Hussey. C. V., and Kaser, M. M. (1956). Fed. Proc., 15, 279.
5. Lister, J. (1863). Lancet, 2, 179.