1. The fibrin plate method for estimating fibrinolytic activity;Astrup;Arch. Biochem.,1952
2. Partial purification and fibrinolytic effect of a factor in peptone;Astrup;Danish Med. Bull.,1957
3. A proteolytic enzyme of serum: characterization, activation and reaction with inhibitors;Christensen;J. Gen. Physiol.,1945
4. Heat denaturation of plasminogen in the fibrin plate method;Lassen;Acta physiol. Scand.,1952
5. An activator system in blood indispensable for formation of plasmin by streptokinase;Müllertz;Proc. Soc. Exp. Biol. & Med.,1953