1. Further studies of prothrombin derivatives;Landaburu,1957
2. Esterase and clotting activity derived from purified prothrombin;Seegers;Am. J. Physiol.,1957
3. Chemistry of prothrombin and thrombin blood clotting factors;Seegers,1959
4. Some properties of thrombin preparations;Seegers;Can. J. Biochem. Physiol.,1959
5. Prothrombin: Living enzyme of my blood;Seegers;Rec. Chem. Prog.,1960