1. Ristocetin-A new tool in the investigation of platelet aggregation;Howard;Thrombos. Diathes. haemorrh. (Stuttg.),1971
2. Ristocetin-A new approach to the investigation of Von Willebrand's disease;Firkin;Aust. N.Z. J. Med.,1971
3. Firkin , B. G. 1972 Hemostatic functions and disorders: Progress in transfusion and transplantation
4. Ristoeetin-A means of differentiating Von Willebrand's disease into two groups;Howard;Blood,1973
5. Morphology and enumeration of human blood platelets;Brecher;J. appl. Physiol.,1950