چند نکته

http://www.eia.doe.gov/emeu/cabs/Iran/pdf.pdf

http://news.goldseek.com/InternationalForecaster/1185986994.php

http://www.fas.org/sgp/crs/row/RS20871.pdf

http://voanews.com/english/2007-07-31-voa4.cfm

http://www.nasdaq.com/aspxcontent/NewsStory.aspx?cpath=20070731%5cACQDJON200707311647DOWJONESDJONLINE000765.htm&