1. The prothrombin time in haemophilia and in obstructive jaundice;Quick;J Biol Chem,1935
2. Standardization of laboratory tests for controlling anticoagulant therapy;Zucker;Am J Clin Pathol,1970
3. Progress in standardization in anticoagulant control;Poller;Hematol Rev,1987
4. Therapeutic range of one-stage prothrombin time in control of anticoagulant therapy;Bailey;Can Med Assoc J,1971
5. An evaluation of chromogenic substrates in the control of oral anticoagulant therapy;Latallo;Br J Haematol,1981