1. Frederick T. Moore, Military Procurement and Contracting: An Economic Analysis (Rand Corp. Memorandum RM-2948PR, June 1962), p. 61.
2. Richard R. Nelson, The Economics of Invention: A Survey of the Literature (Rand Corporation Memorandum RM-2146-1, Jan. 15, 1957), p. 28.
3. T. A. Marschak, The Role of Project Histories in the Study of R&D and Success of Development (Rand Corporation P-1821, Dec. 11, 1959), p. 2.
4. A.W. Marshall and W.H. Meckling, Predictability of the Costs Time and Success of Development (Rand Corporation P-1821, Dec. 11, 1959), p. 22.
5. Edwin Mansfield, Research and Innovation in the Modern Corporation (New York: W.W. Norton and Co., Inc., 1971), p. 212.