Federal Reserve Chairman Ben S. Bernanke said policies to unfreeze credit markets are working. <a href="http://www.bloomberg.com/apps/news?pid=20601087&sid=az5l5KYFjxQE&refer=home" rel="nofollow" target="_blank">http://www.bloomberg.com/apps/news?pid=20601087&sid=az5l5KYFjxQE&refer=home</a>