1. The anticoagulant from spoiled sweet clover hay;LINK K. P.;Harvey Lectures Series
2. The anticoagulant Dicunmarol;LINK K. P.;Proc. Inst. Med. Chicago,1945
3. The anticoagulant 3,3'-methylene-bis (4- hydroxycoumarin);LINK K. P.;Fed. Proc.,1945
4. New York Heart Association Quarterly;ANON.;New York,1950
5. SHAPIRO S. AND WEINER M.: Coagulation Thrombosis and Dicumarol. New York Brooklyn Medical Press 1949.