- “Announcing 500 billion digits of e…” by Alexander J. Yee (2010.09.17) – http://www.numberworld.org/misc_runs/e-500b.html
- “Frequency distribution of the Pi, e, and Sqrt(2)” – http://ja0hxv.calico.jp/pai/estatistics.html
Related at this blog: Pi calculations – https://eikonal.wordpress.com/2010/01/05/pi-calculations/