3 ms·

Discussed at greater depth in the paper at http://goo.gl/YDTwu http://goo.gl/YDTwu , if anyone's interested.

• tptacek 13y ago
  Thank you for this.
• nkurz 13y ago
  Thanks! Direct link to the paper here: http://ursuletz.com/people/faculty/pdfs/p190-luk.pdf http://ursuletz.com/people/faculty/pdfs/p190-luk.pdf