International Journal of Production Economics
International Journal of Production Economics > 2010 > 124 > 2 > 448-452
International Journal of Production Economics > 2011 > 131 > 1 > 96-106
International Journal of Production Economics > 2010 > 124 > 2 > 448-452
International Journal of Production Economics > 2011 > 131 > 1 > 96-106