Software development effort estimation: Difference between revisions

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| title = Factors that affect the cost of computer programming, volume I
| url = http://www.dtic.mil/dtic/tr/fulltext/u2/603707.pdf
| archive-url = https://web.archive.org/web/20170221211529/http://www.dtic.mil/dtic/tr/fulltext/u2/603707.pdf
| url-status = dead
| archive-date = February 21, 2017
}}</ref><ref>{{cite web
| author = Farr, L. Nanus, B.
| title = Factors that affect the cost of computer programming, volume II
| url = http://www.dtic.mil/dtic/tr/fulltext/u2/607546.pdf
| archive-url = https://web.archive.org/web/20180728134658/http://www.dtic.mil/dtic/tr/fulltext/u2/607546.pdf
| url-status = dead
| archive-date = July 28, 2018
}}</ref> and Nelson.<ref>Nelson, E. A. (1966). Management Handbook for the Estimation of Computer Programming Costs. AD-A648750, Systems Development Corp.</ref>