@article {doyen2012two, title = {A two-echelon stochastic facility location model for humanitarian relief logistics}, journal = {Optimization Letters}, volume = {6}, number = {6}, year = {2012}, pages = {1123{\textendash}1145}, publisher = {Springer-Verlag}, author = {D{\"o}yen, Alper and Necati Aras and Barbaroso{\u g}lu, G{\"u}lay} }