@article {gzara2009lagrangian,
	title = {A Lagrangian relaxation approach to large-scale flow interception problems},
	journal = {European Journal of Operational Research},
	volume = {198},
	year = {2009},
	pages = {405{\textendash}411},
	publisher = {Elsevier},
	author = {Gzara, Fatma and Erkut, Erhan}
}
