@book{168898,
	author = {Eschard, R.},
	title = {Habitat of biodegraded heavy oils},
	year = {sept./oct. 2008},
	url = {http://ogst.ifp.fr/index.php?option=article&access=standard&Itemid=129&url=/articles/ogst/pdf/2008/05/ogst07062.pdf}
}