By Juan Carlos Hidalgo. The Friedrich Naumann Stifftung. November 5, 2013.
By Dalibor Rohac. Economic Affairs. Vol. 33. No. 1. February 6, 2013.
By Doug Bandow. Towards a Worldwide Index of Human Freedom. 2013.
By Ian Vásquez and Tanja Porčnik. Towards a Worldwide Index of Human Freedom. 2013.
By Dalibor Rohac. Hoover Institution Policy Review. Vol. 175. October 2, 2012.
By Johan Norberg. Centre for European Studies: Policy Brief. September 2010.
By Swaminathan S. Anklesaria Aiyar. Escape from the Benevolent Zookeepers. 2008.
By Ian Vásquez. Econ Journal Watch. Vol. 4. No. 2. May 2007.
By Ian Vásquez. Boston Review. July 2006.
By Ian Vásquez. Issues of Democracy. December 2005.