Chau, S. A., N. Herrmann, J. Chung, M. Eizenman, and K. L. Lanctôt. “Effect of Methylphenidate for Apathy on Visual Attention Scanning Behavior: A Pilot Study”. Canadian Geriatrics Journal, vol. 21, no. 2, July 2018, pp. 139-42, doi:10.5770/cgj.21.291.