@inbook {aksen2006customer,
	title = {Customer selection and profit maximization in vehicle routing problems},
	booktitle = {Operations Research Proceedings 2005},
	year = {2006},
	pages = {37{\textendash}42},
	publisher = {Springer Berlin Heidelberg},
	organization = {Springer Berlin Heidelberg},
	author = {Aksen, Deniz and Necati Aras}
}
