1. Ristocetin - a new tool in the investigation of platelet aggregation;Howard;Thromb. Diath. Haemorrh.,1971
2. Quantitative assay of a plasma factor deficient in von Willebrand's disease that is necessary for platelet aggregation;Weiss;J. Clin. Invest.,1973
3. Plasma aggregating factor (bovine) for human platelets: a marker for study of antihemophilic and von Willebrand factors;Griggs,1973
4. Von Willebrand factor: gene dosage relationships and transfusion response in bleeder swine - a new bioassay;Griggs,1974
5. Nature of von Willebrand factor: a new assay and a specific inhibitor;Sarji,1974