And the paper, which that page links to:<p><a href="https:&#x2F;&#x2F;www.cs.unm.edu&#x2F;~dlchao&#x2F;papers&#x2F;p152-chao.pdf" rel="nofollow">https:&#x2F;&#x2F;www.cs.unm.edu&#x2F;~dlchao&#x2F;papers&#x2F;p152-chao.pdf</a>