http://www.energycharter.org/what-we-do/dispute-settlement/investment-dispute-settlement-cases/30-tuerkiye-petrolleri-anonim-ortakligi-turkey-v-kazakhstan/
http://globalarbitrationreview.com/news/article/32914/season-settlements-icsid/ (requires subscription)
http://globalarbitrationreview.com/news/article/32791/turkey-kazakhstan-settle-oil-dispute/ (requires subscription)
http://globalarbitrationreview.com/news/article/29876/powerhouse-tribunal-claim-against-kazakhstan/ (requires subscription)
http://www.hugheshubbard.com/aboutus/Pages/News.aspx?nid=690