Improved local search algorithms for the rectangle packing problem with general spatial costs.

Shinji Imahori Mutsunori Yagiura Toshihide Ibaraki Improved local search algorithms for the rectangle packing problem with general spatial costs. 48-67 2005 167 European Journal of Operational Research 1 http://dx.doi.org/10.1016/j.ejor.2004.02.020 db/journals/eor/eor167.html#ImahoriYI05