The effects of amantadine and pemoline on cognitive functioning in multiple sclerosis. Arch Neurol, 53(2), 185-8. doi: 10.1001/archneur.1996.00550020101021
. (1996). Cognitive functioning and depression in patients with chronic fatigue syndrome and multiple sclerosis. Arch Neurol, 51(7), 705- 10. doi: 10.1001/archneur.1994.00540190089021
. (1994).