3. Dijkstra, E.W., "GO TO Statement Considered Harmful". Letter to the Editor,Communications of the ACM, Vol. 11, No. 8 August 1968, p. 538.
4. For an earlier set of reminiscences see "A Programmer's Early Memories" inA History of Computing in the Twentieth Century, N. Metropolis, J. Howlett. and Gian-Carlo Rota, (Eds), third printing, Academic Press. New York, 1986. pp.563-574.