1. “Getting the Most out of Your Computer.”;Garrity,1963
2. News article, “Software Classification Undertaken as Pilot Project.” Computerworld p. 2, 1969 November 5.
3. David, E. E., “Some thoughts about the production of large software systems.” NATO Conf. Software Eng., Garmisch, 1968, excerpted in the Rep. on Conf., 1969. NATO, Brussels.
4. Anonymous, “The end of OS.” Datamation, 14, 72 (1968 April).
5. “On the economics of the software market.”;Conway;Datamation,1968