悬赏 20 个论坛币 已解决
1.Regionalization in the World Crude Oil Market
S. Gurcan Gulen
The Quarterly Journal of the IAEE's Energy Economics Education Foundation
Volume18, Number 2
http://www.iaee.org/en/publications/ejarticle.aspx?id=1251
2 Regionalization in the World Crude Oil Market: Further Evidence
S. Gurcan Gulen
The Quarterly Journal of the IAEE's Energy Economics Education Foundation
Volume20, Number 1
http://www.iaee.org/en/publications/ejarticle.aspx?id=1305