@unpublished{rechberger15[TUW-242196], author = {Rechberger, Helmut and Buchner, Hanno and Kleemann, Fritz}, title = {{C}haracterization of urban mines}, year = {2015}, note = {eingeladen; {V}ortrag: 1st {E}uropean {M}ining {\&} {E}xploration {F}orum, {W}ien; 2015-11-17 -- 2015-11-18} }