International Journal of Production Economics
International Journal of Production Economics > 2011 > 130 > 2 > 262-267
International Journal of Production Economics > 2011 > 133 > 2 > 603-611
International Journal of Production Economics > 2011 > 130 > 2 > 262-267
International Journal of Production Economics > 2011 > 133 > 2 > 603-611