1. Factors in the initiation of deep venous thrombosis;Wessler,1975
2. Stasis and prevention of deep vein thrombosis;Nicolaides,1972
3. Comparative studies on drugs which increase venous tone using noradrenaline, ethyladrianol, dihydroergotamine and horse chestnut extract;Lange;Fort. Med.,1972
4. A new method for prophylaxis of postoperative venous thrombosis;Muhe;Der Klinikarzt,1972
5. Dihydroergotamine in the prevention of postoperative deep venous thrombosis;Stamatakis;British J. Surgery,1977