@book{justhis5497,
           title = {Cours de droit civil {\'e}l{\'e}mentaire},
          author = {M. De Clerq},
         address = {Bruxelles},
       publisher = {A. de Boeck},
            year = {1959},
             url = {http://www.just-his.be/eprints/5497/}
}