@article {Aras2008,
	title = {Locating collection centers for incentive-dependent returns under a pick-up policy with capacitated vehicles},
	journal = {European Journal of Operational Research},
	volume = {191},
	number = {3},
	year = {2008},
	pages = {1223{\textendash}1240},
	publisher = {Elsevier},
	author = {Necati Aras and Aksen, Deniz and G{\"o}n{\"u}l Tanu{\u g}ur, Ay{\c s}e}
}
