@book {47738327, title = {{Efficient Lower and Upper Bounds for the Multi-commodity Capacitated Multi-facility Weber Problem with Rectilinear Distances}}, series = {Logistik Management}, year = {2009}, doi = {10.1007/978-3-7908-2362-2_11}, author = {M. Hakan Aky{\"u}z and Temel {\"O}ncan and I. Kuban Altinel} }