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2. Myerowitz, R.L., Handzel, Z.T., Robbins, J.B.: Clin. chim. Acta 39, 307–317 (1972).
3. Miller-Andersson, M., Andersson, L.-O., Borg, H.: IVth Int. Congr. on Thrombosis and Haemostasis (June 19th to 22nd 1973, Vienna, Austria) Abstract 181, p.216.
4. Loeb, J.: Arch. Sci. Physiol. 10, 129–142 (1956).
5. Heimburger, N.: unpublished.