1. Therapie und Prognose der frischen Aussenknochel-bandlasion;Adler, H.;Unfallheilkunde,1976
2. Statistical Methods in Medical Research;Armitage, P.,1977
3. The natural history of inadequately treated ankle sprain;Brand, R.L.;Am. J. Sports Med,1977
4. Sprained ankles. Treatment and prognosis in recent ligament ruptures;Brostrom, L.;Acta Chir. Scand,1966
5. Conservative treatment of injury to the fibular ligaments of the ankle;Cetti, R.;Brit. J. Sports Med,1981