@article {keccici2012incorporating, title = {Incorporating the threat of terrorist attacks in the design of public service facility networks}, journal = {Optimization Letters}, volume = {6}, number = {6}, year = {2012}, pages = {1101{\textendash}1121}, publisher = {Springer-Verlag}, author = {Ke{\c c}ici, Serhat and Necati Aras and Verter, Vedat} }