November 2018 | Publisher: UN High Commissioner for Refugees (UNHCR) | Document type: Research, Background and Discussion Papers
24 March 2014 | Publisher: United States Congressional Research Service | Document type: Research, Background and Discussion Papers
26 February 2013 | Publisher: United States Congressional Research Service | Document type: Research, Background and Discussion Papers
1 March 2011 | Publisher: United States Congressional Research Service | Document type: Research, Background and Discussion Papers
31 July 2000 | Publisher: UN High Commissioner for Refugees (UNHCR) | Document type: Research, Background and Discussion Papers