1. British Medical;Journal; Editorial. Anticoagulants in mitral valve disease,1972
2. A preparation from spoiled sweet clover [3'3-methylene-bis-(4 hydroxycoumarin)] which prolongs coagulation and prothrombin time of the blood: preliminary report of experimental and clinical studies;Butt, H.R.; Allen, E.V.; Bollman, J.L.;Mayo Clinic Proceedings,1941
3. Hemorrhagic complications of anticoagulant therapy;Coon, W.W.; Willis, III, P.W.;Archives of Internal Medicine,1974
4. Practical Haematology;Dacie, J.V.; Lewis, S.M.,1975
5. Mitral valve disease, systemic embolism and anticoagulants;Fleming, H.A.; Bailey, S.M.;Postgraduate Medical Journal,1971