Source:
1. http://wyden.senate.gov/newsroom/press/release/?id=34eddcdb-2541-42f5-8f1d-19234030d91e
2. http://www.justice.gov/oig/special/s0803b/final.pdf
3. http://thescienceofsecurity.org/blog/CT%20Since%209-11_by_Breakthrough.pdf
4. http://www.justice.gov/oig/special/s0703b/final.pdf
5. http://www.justice.gov/oig/special/s0803b/final.pdf
6. Report of the Director of the Administrative Office of the United States Courts on Applications for Delayed-Notice Search Warrants and Extensions for fiscal year 2010, on file with the Administrative Office of the United States Courts.