@article {aras2008efficient, title = {Efficient heuristics for the rectilinear distance capacitated multi-facility Weber problem}, journal = {Journal of the Operational Research Society}, volume = {59}, number = {1}, year = {2008}, pages = {64{\textendash}79}, publisher = {Nature Publishing Group}, author = {Necati Aras and Orbay, M and I. Kuban Altinel} }