1. U.S. Department of State. Patterns of global terrorism 2003. Washington.
http://www.state.gov/documents/organization/31912.pdf
. Accessed 1 Apr 2018.
2. U.S. Department of State. Country reports on terrorism 2005. Washington.
https://www.state.gov/j/ct/rls/crt/2005/
. Accessed 1 Apr 2018.
3. U.S. Department of State. Country reports on terrorism 2010. Washington.
https://www.state.gov/j/ct/rls/crt/2010/index.htm
. Accessed 1 Apr 2018.
4. U.S. Department of State. Country reports on terrorism 2011. Washington.
https://www.state.gov/j/ct/rls/crt/2011/index.htm
. Accessed 1 Apr 2018.
5. U.S. Department of State. Country reports on terrorism 2012. Washington.
https://www.state.gov/j/ct/rls/crt/2012/index.htm
. Accessed 1 Apr 2018.