@article {aksen2009design,
	title = {Design and analysis of government subsidized collection systems for incentive-dependent returns},
	journal = {International Journal of Production Economics},
	volume = {119},
	number = {2},
	year = {2009},
	pages = {308{\textendash}327},
	publisher = {Elsevier},
	author = {Aksen, Deniz and Necati Aras and Karaarslan, Ay{\c s}e G{\"o}n{\"u}l}
}
