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4. Arnold, L. E., Wender, P. Mccloskey, K., & Snyder, S. H. Levo-amphetamine and dextroamphetamine: Comparative efficacy in the hyperkinetic syndrome: assessment by target symptoms. Archives of General Psychiatry, 1972, 27, 816–822.
5. Barcia, A. Predicting the response of children with learning disabilities and behavior problems to dextro-amphetamine sulfate. Pediatrics, 1971, 47, 73–79.