1. Alhajji, A.F., 2007a. What is energy security? (1/5), Middle East Economic Survey, 24 September. Available from: 〈http://www.mees.com/postedarticles/oped/v50n39-5OD01.htm〉 (accused 05.09.10).
2. Alhajji, A.F., 2007b. What is energy security? (2/5), Middle East Economic Survey, 22 October. Available from: 〈http://www.mees.com/postedarticles/oped/v50n43-5OD01.htm〉 (accused 05.09.10).
3. Alhajji, A.F., 2007c. What is energy security? (3/5), Middle East Economic Survey, 5 November. Available from: 〈http://www.mees.com/postedarticles/oped/v50n45-5OD01.htm〉 (accused 05.09.10).
4. Times Asia, 2010. Putin opens oil-export route, 5 January. Available from: 〈http://www.atimes.com/atimes/Central_Asia/LA05Ag01.html〉 (accused 05.09.10).
5. Barboza, David, 2010. China passes Japan as second-largest economy, The New York Times, 15 August. Available from: 〈http://www.nytimes.com/2010/08/16/business/global/16yuan.html〉 (accused 05.09.10).