Amantadine revisited: an open trial of amantadine sulfate treatment on chronically depressed patients with Borna disease virus infection. - Ferszt,R.; Kühl,K-P.; Bode,L.; Severus,E.W.; Winzer,B.; Berghofer,A.; Beelilitz,G.; Brodhun,B.; Müler-Oerlinghausen,B.; Ludwig,H. (Pharmacopsychiat, 1999)