@unpublished{rechberger13[TUW-216803], author = {Rechberger, Helmut}, title = {{U}rban {M}ining}, year = {2013}, note = {eingeladen; {V}ortrag: {F}orschungsberichte aus der {A}bfallwirtschaft, {B}{O}{K}{U} {W}ien, {I}nstitut f{\"u}r {A}bfallwirtschaft; 2013-01-24} }