|Title of host publication||Proceedings of the 12th IIES International Oil & Gas Conference|
|Subtitle of host publication||Developments in Geopolitics of Energy; The Role of Natural Gas|
|Place of Publication||Teheran|
|Publication status||Published - 2008|
Ashayeri, J. (2008). Securing efficient supply: Horizontal and vertical collaboration in petroleum industry. In Proceedings of the 12th IIES International Oil & Gas Conference: Developments in Geopolitics of Energy; The Role of Natural Gas IIES.