@unpublished{winter09[TUW-176337],
author = {Winter, Franz and Nowak, Benedikt and Mattenberger, Harald and Rechberger, Helmut and Hermann, Lois},
title = {{U}rban {M}ining - {P}roduction of {F}ertilizer from {S}ewage {S}ludge {A}shes},
year = {2009},
note = {{V}ortrag: {S}olid {W}aste {M}anagement {S}ymposium, {W}ien; 2009-03-11 -- 2009-03-13}
}