1. Parkinsonism: Preliminary Report on two new anti-parkinsonian agents;Berris;J. Lancet,1954
2. Preliminary Study of a new anti-parkinson agent;Doshay;Neurology,1952
3. Five-year study of Benztropine (Cogentin) Methane-sulfonate. Outcome in three hundred two cases of paralysis agitans;Doshay;J.A.M.A.,1956
4. Cogentin, an antiparkinsonian drug with prolonged action;Keller;Münch. med. Wschr.,1960
5. Use of benzotropine sulfonate in treatment of Parkinsonism;O'Doherty;Med. Ann. Dist. Columbia,1953