@book{169119,
	author = {Azin, R.},
	title = {Underground gas storage in a partially depleted gas reservoir},
	year = {nov./dic. 2008},
	url = {http://ogst.ifp.fr/index.php?option=article&access=standard&Itemid=129&url=/articles/ogst/pdf/2008/06/ogst07094.pdf}
}