Maksud Ibrahimov Arvind Mohais Zbigniew Michalewicz Global Optimization in Supply Chain Operations. 1-28 2009 Natural Intelligence for Scheduling, Planning and Packing Problems http://dx.doi.org/10.1007/978-3-642-04039-9_1 series/sci/2009-250 db/series/sci/sci250.html#IbrahimovMM09