TY - JOUR TI - A review and comparative assessment of existing approaches to calculate material footprints PY - 2016 AU - Stephan Lutter AU - Stefan Giljum AU - Martin Bruckner T2 - Ecological Economics LK - http://www.sciencedirect.com/science/article/pii/S0921800916303299 DO - 10.1016/j.ecolecon.2016.03.012 ER -