@techReport{PaoluzziPV-ISM1992,
   author =      {A. Paoluzzi and V. Pascucci and M. Vicentino},
   title =       {Is Structure more Useful than Topololgy? The Design of a
                  Geometric Design Language},
   institution = {Dip. di Informatica e Sistemistica, Universit\`a 'La
                  Sapienza'},
   number =      {16--92},
   month =       {September},
   year =        1992,
}