@unpublished{rechberger14[TUW-227844], author = {Rechberger, Helmut}, title = {{M}aterial flow analysis and the problem of data quality}, year = {2014}, note = {eingeladen; {V}ortrag: {I}nternational {W}orkshop ''{D}ata reconciliation and uncertainty in process and material flow analyses'', {P}aris; 2014-03-20} }