1. In Blood Cells and Plasma Proteins. Their State in Nature;Cohn, E.J.,1953
2. In The Coagulation of Blood. Methods of Study;Holburn, R.R.,1955
3. Odell,T. T., Jr., and Upton, A. C.(1955). Acta haemat. (Baset), 14,291.
4. Quick, A. J., and Stefanini, M. (1948). J. Lab. clin. Med., 33, 819.
5. Stefanini, M. (1950). Acta med. scand., 136, 250.