1. CLAUSS, A. (1957): Gerinnungsphysiologische,Schnellmethode zur Bestimmung des Fibrinogens. Acta Haemat., 17: 237.
2. SCHÖNHOLZER, G. and SUNNER, F. von (1948): Der Fibrinogengehalt des Blutplasmas im Hochgebirge. Helv.Physiol.Acta, 6: 639?648.
3. TROMP, S.W. (1958): The geographical distribution of arteriosclerotic heart diseases in The Netherlands (period 1936?1945). Monograph Series Biom.Res.Centre, Leiden, 3.
4. TROMP, S.W. (1967a): Blood sedimentation rate patterns in The Netherlands during the period 1955?1965. Int. J. Biometeor., 11: 105?117.
5. TROMP, S.W. (1967b): Short and long term changes in the albumin and ?-globulin level of the blood serum at Leiden, The Netherlands, during the period 1960?1966. Rep.Biometeor.Res.Centre, 8.