1. “The Changing Nature of the U.S. Navy Ship Design Process”;Johnson;Naval Engineers Journal,1980
2. 2NAVSEA Notice 4350 of 28 September 1979, Subject: “Engineering Resource Alternatives (ERA); analysis of”.
3. 3 Johnson, A. , “Engineering Resources Alternatives Task,” 20 August 1980 Revision.
4. 4Department of Defense Directive, DODD 5000.1, 19 March 1980.
5. 5 Department of Defense Instruction, DODI 5000.2, 19 March 1980.