@article {Hillring:1997:0961-9534:41,
	author = "Hillring B.",
	title = "Price trends in the swedish wood-fuel market",
	journal = "Biomass and Bioenergy",
	volume = "12",
	year = "1997",
	abstract = "",
	pages = "41-51(11)",
	url = "http://www.ingentaconnect.com/content/els/09619534/1997/00000012/00000001/art00066"
	doi = "doi:10.1016/S0961-9534(96)00066-9"
}