1. 在Oglethorpe大学1932年5月22号的演讲.
2. 描述了Multics在两个成功系统上所获得经验的书籍是F. J. Corbató, J. H. Saltzer, and C. T. Clingen, “Multics-the first seven years,” AFIPS Proc SJCC. 40(1972), pp. 571-583.
3. Cosgrove, J., “Needed: a new planning framework,” Datamation, 17, 23(Dec.1971 ), pp. 37-39.
4. 设计变更的问题是很复杂的, 这里我过于简化了. 参见J. H. Saltzer “Evolutionary design of complex systems,” in D. Eckman (ed.), Systems: Research and Design. New York: Wiley, 1961. 当所有的事被提出和完成, 我依然提倡构建一个被抛弃的实验性系统.
5. Campbell, E., “Report to the AEC Computer Information Meeting,” December, 1970. 该现象同时有J. L. Ordin 在“Designing reliable software,” Datamation. 18, 7(. July. 1972), pp. 71-78中讨论. 至于曲线是否会再次下降, 我的具有丰富检验的朋友们各执己见.
6. Lehman, M., and L. Belady, “Programming systems dynamics,” given at the ACM SIGOPS Third Symposium on Operating Systems Principles ,October, 1971.
7. Lewis, C. S., Mere Christianity. New York: Macmillan, 1960, p. 54.
