International Journal of Production Economics
International Journal of Production Economics > 2009 > 118 > 1 > 82-86
International Journal of Production Economics > 2009 > 118 > 1 > 34-42
International Journal of Production Economics > 2009 > 118 > 1 > 175-184
International Journal of Production Economics > 2009 > 121 > 2 > 715-727