1. Purification of blood coagulation factors II, VII, IX, and X from bovine citrated plasma;Reekers;Haemostasis,1972
2. Kinetic aspects of the interaction of blood clotting enzymes. VII. The relation between clotting time and prothrombin concentration;Hemker;Thromb. Haem.,1977
3. A new method for the preparation of artificial factor II reagents from normal human and bovine plasma;Vermeer;Thrombos. Res.,1977
4. Bovine factors X1 and X2 (Stuart factor);Fujikawa,1972
5. Artificial reagents for factor VII and factor X, a computer program for obtaining reference tables for onestage determinations in the extrinsic system;Hemker;Thrombos. Diathes. haemorrh.,1972