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Born, Hans, and Ian Leigh. Democratic Accountability of Intelligence Services In  DCAF Policy Paper., 2007.

Born, Hans, and Ian Leigh. Making Intelligence Accountable: Legal Standards and Best Practice for Oversight of Intelligence Agencies. DCAF, 2005.

Born, Hans, and Ian Leigh. "More Closely Watching the Spies: Three Decades of Experiences." In Who?s watching the Spies? Establishing Intelligence Service Accountability . Dulles, V.A.: Potomac Books, INC, 2005.