International Journal of Production Economics
International Journal of Production Economics > 2011 > 129 > 1 > 14-22
International Journal of Production Economics > 2011 > 129 > 2 > 242-250
International Journal of Production Economics > 2011 > 130 > 1 > 125-133
International Journal of Production Economics > 2011 > 134 > 2 > 447-457