Solid-liquid separation Anlauf, H. 1991. In: 17th International Mineral Processing Congress, Dresden 1991. Preprints. Vol. 3. Fine particles processing. S. 219-231
The optimum size distribution of income Chakravarty, S.; Eichhorn, W. 1991. Karlsruhe 1991. (Discussion paper. Institut fuer Wirtschaftstheorie und Operations Research. Nr. 376.)