Economist Darryl Robert Schoon made a passing reference to 9/11 in an article he wrote for Kitco.com, an investment-oriented website. The article is titled, "Tuscon & The Great Depression - This Is Not Your Normal Downturn".

Here's the relevant quote:

"I wonder what they would do if they knew about the dangers posed by investment bank credit default swaps, CDSs, a $62 trillion unregulated market that could destroy the global economy as quickly and as easily as charged explosives brought down three towers at the World Trade Center on 9/11."

Full article can be found here:

http://www.kitco.com/ind/schoon/apr222008.html