@article {elhedhli2008integrated,
	title = {Integrated design of supply chain networks with three echelons, multiple commodities and technology selection},
	journal = {IIE Transactions},
	volume = {40},
	number = {1},
	year = {2008},
	pages = {31{\textendash}44},
	publisher = {Taylor \& Francis},
	author = {Elhedhli, Samir and Gzara, Fatma}
}
