@article {ray2005optimal, title = {Optimal prices and trade-in rebates for durable, remanufacturable products}, journal = {Manufacturing \& Service Operations Management}, volume = {7}, number = {3}, year = {2005}, pages = {208{\textendash}228}, publisher = {INFORMS}, author = {Ray, Saibal and Boyaci, Tamer and Necati Aras} }