1. A comparison of biological activities and chemical analyses for various heparin preparations;Jaques;Arzneimittel-Forsch.,1967
2. A comparison of analytical values for commercial heparin;Kavanagh;Arzneimittel-Forsch.,1973
3. A collaborative study of heparins from different sources;Bangham;Bull. Wld Hlth Org.,1970
4. An improved assay procedure for standardization of heparin preparations based on activities in vivo;Kuo;J. Pharm. Pharmacol.,1972
5. The Determination of Heparin;Jaques,1959