1. The science of the artificial;Simons,1969
2. M. M. Lehman, “The programming process”, IBM Research Division RC2722, December 1969.
3. L. A. Belady and M. M. Lehman, “Programming systems growth dynamics”, IBM Research Division RC3546, September 1971.
4. “Structured programming”;Dijkstra,1970
5. L. A. Belady and M. M. Lehman, “On the macro-dynamics of programming and other systems”, in preparation.