Google does citation searches

This is going to be a huge boost for bringing material to our attention:

http://www.investors.com/breakingnews.asp?journalid$056079&brk=1

Look at what comes up for "metallic hydrogen propulsion"
http://scholar.google.com/scholar?hl=en&lr=&q=metallic+hydrogen+propulsion&btnG=Search

Or for "lunar concrete"
http://scholar.google.com/scholar?hl=en&lr=&q=lunar+concrete&btnG=Search

Oh yeah, no more shifting through loads of unrelated material.

TangoMan