1. Weir, S. LOGO as an information prosthetic for the handicapped (Working Paper 9). Cambridge: M.I.T., Division for Study and Research in Education, May 1981.
2. Watt, D., Papert, S., DiSessa, A., & Weir, S. Final report of the Brook line LOGO project Part II: Project summary and data analysis (LOGO Memo No. 53). Cambridge, Mass: M.I.T., Artificial Intelligence Lab, September, 1979.