| 1 | initial version |
The wikipedia page points to a simple algorithm (http://ajc.maths.uq.edu.au/pdf/30/ajc_v30_p051.pdf). See ticket https://trac.sagemath.org/ticket/32426.
Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.