1. Draft report of a collaborative study of two thromboplastins (including the use of common abnormal plasma);Bangham, D.R.; Biggs, R.; Brozovic, M.; Denson, K.W.E.;Thrombos. Diathes. haemorrh. (Stuttg.),! Suppl,1970
2. Calibration of five different thromboplastins using fresh and freeze dried plasma;Bangham, D.R.; Biggs, R.; Brozovic, M.; Denson, K.W.E.;Throinbos. Diathes. haemorrhl. (Stuttg.),1973
3. Report on the standardization of one-stage prothrombin time for the control of anticoagulant therapy;Biggs, R.;Tlirombos. Diathet. haemorrh. (Stuttg.),1965
4. The standardization of the prothrombin time for the control of anticoagulant therapy. Thronmbos. Diathes;Biggs, R.;haentorrh. (Stuttg.),1969
5. Standardization of the onestage prothrombin time test for the control of anticoagulant therapy: availability and use of thromboplastin reference preparations;Biggs, R.; Bangham, D.R.;Brit. med. J,1971