USRP schematics Etc license

I’m writing a paper which has a section on open hardware, and would like
to
mention the USRP. I’ve checked-out usrp-hw from SVN, but can’t see any
license notices. So my question is, what license applies to the
schematics
Etc? And am I right in assuming there are no gerber files?

And lastly, does anyone know where I can find an appropriately licensed
(ideally high-res) copy of this image?

http://blog.makezine.com/gnuradio_board.jpg

Regards,

Andrew