Cable characteristic impedance

do any one have any article or link which spell out the twisted pair cable characteristic impedance related to its AWG

Calculations of characteristic impedance of different AWG twisted pairs:
http://www.sigcon.com/lib/htm/TWIST.htm


Here is the previous link on impedance measurements that you could not go through:
http://www.optics.arizona.edu/Palmer.../5950-3000.pdf