@incollection{iiasa4376,
       booktitle = {Hans Hahn Collected Works},
           title = {Hans Hahn - Kurzbiographie},
         address = {Springer-Verlag},
       publisher = {Vol. 1},
            year = {1995},
             url = {https://pure.iiasa.ac.at/id/eprint/4376/},
          author = {Sigmund, K. and Schmetterer, L.}
}