@article {aksen2010budget,
	title = {The budget constrained r-interdiction median problem with capacity expansion},
	journal = {Central European Journal of Operations Research},
	volume = {18},
	number = {3},
	year = {2010},
	pages = {269{\textendash}291},
	publisher = {Springer-Verlag},
	author = {Aksen, Deniz and Piyade, Nuray and Necati Aras}
}
