Improving working memory in children with attention-deficit/hyperactivity disorder: the separate and combined effects of incentives and stimulant medication
Journal of Abnormal Child Psychology (2012) - Comment
pubmed: 22477205  doi: 10.1007/s10802-012-9627-6  issn: 1573-2835  issn: 0091-0627 

Michael T. Strand, Larry W. Hawk, Michelle Bubnik, Keri Shiels, William E. Pelham, James G. Waxmonsky