@book{justhis6670,
           title = {M{\'e}moire sur le r{\'e}gime hypoth{\'e}caire, contenant des observations sur le syst{\`e}me qui nous r{\'e}git (etc.)},
          author = {P. De Ridder},
         address = {Bruges},
            year = {1831},
             url = {http://www.just-his.be/eprints/6670/}
}