1. M. H. Weik, “The ENIAC Story,” http://ftp.arl.mil/~mike/comphist/eniac-story.html , 1961.
2. M. F. Cowlishaw, “Decimal Arithmetic FAQ: Part 1—General Questions,” Available at http://www2.hursley.ibm.com/decimal/decifaq1.htm , 2003.
3. M. Blair, S. Obenski, and P. Bridickas, “Patriot Missile Defense—Software Problem Led to System Failure at Dhahran, Saudi Arabia,” http://www.fas.org/spp/starwars/gao/im92026.htm , 1992.
4. W. Kahan, “How Futile are Mindless Assessments of Roundoff in Floating-point Computation?,” Available at http://www.cs.berkeley.edu/~wkahan/Mind1ess.pdf , 2004.
5. European Commission, “The Introduction of the Euro and the Rounding of Currency Amounts,” http://europa.eu.int/comm/economy_finance/publications/euro_papers/200%1/eup22en.pdf, March 1998.