1. Big Red II at Indiana University. https://kb.iu.edu/d/bcqt#overview. Big Red II at Indiana University. https://kb.iu.edu/d/bcqt#overview.
2. HPX website. http://hpx.crest.iu.edu/. Accessed: 2015-05--25. HPX website. http://hpx.crest.iu.edu/. Accessed: 2015-05--25.
3. The NIST reference on constants units and uncertainty. http://physics.nist.gov/cuu/Uncertainty/basic.html Sept. 2015. The NIST reference on constants units and uncertainty. http://physics.nist.gov/cuu/Uncertainty/basic.html Sept. 2015.