International Journal of Production Economics
International Journal of Production Economics > 2009 > 118 > 1 > 146-151
International Journal of Production Economics > 2009 > 122 > 1 > 312-318
International Journal of Production Economics > 2009 > 118 > 1 > 146-151
International Journal of Production Economics > 2009 > 122 > 1 > 312-318