@conference {kucukaydin2012hybrid, title = {Hybrid Tabu Search Heuristics for a Bilevel Competitive Facility Location Model}, booktitle = {26th Annual Conference of the Belgian Operational Research Society}, year = {2012}, author = {K{\"u}{\c c}{\"u}kayd{\i}n, Hande and Necati Aras and I. Kuban Altinel} }