International Journal of Production Economics
International Journal of Production Economics > 2011 > 130 > 2 > 224-229
International Journal of Production Economics > 2011 > 133 > 1 > 280-285
International Journal of Production Economics > 2011 > 130 > 2 > 224-229
International Journal of Production Economics > 2011 > 133 > 1 > 280-285