@article {aras2011selective, title = {Selective multi-depot vehicle routing problem with pricing}, journal = {Transportation Research Part C: Emerging Technologies}, volume = {19}, number = {5}, year = {2011}, pages = {866{\textendash}884}, publisher = {Elsevier}, author = {Necati Aras and Aksen, Deniz and Tu{\u g}rul Tekin, Mehmet} }