1. Douglas, V., Weiss, G., & Minde, K. Learning disabilities in the hyperactive child and the effect of methylphenidate. Paper presented at the meeting of the Canadian Psychological Association, Toronto, 1969.
2. Schulman, J. L., Suran, B. G., Kupst, M. J., & Stevens, T. M. Activity level: A review of theories and an experimental study. Manuscript submitted for publication, 1976.