@article {Campbell:1 December 2002:0144-5987:407,
	author = "Campbell C.J.",
	title = "The Assessment and Importance of Oil Depletion",
	journal = "Energy Exploration & Exploitation",
	volume = "20",
	year = "1 December 2002",
	abstract = "",
	pages = "407-435(29)",
	url = "http://www.ingentaconnect.com/content/mscp/eee/2002/00000020/00000006/art00002"
	doi = "doi:10.1260/014459802321615054"
}