@article {kuccukaydin2011discrete, title = {A discrete competitive facility location model with variable attractiveness}, journal = {Journal of the Operational Research Society}, volume = {62}, number = {9}, year = {2011}, pages = {1726{\textendash}1741}, publisher = {Nature Publishing Group}, author = {K{\"u}{\c c}{\"u}kayd{\i}n, H and Necati Aras and I. Kuban Altinel} }