@book{justhis6519,
           title = {La loi sur le droit d'auteur et les soci{\'e}t{\'e}s particuli{\`e}res},
          author = {E. Gielkens},
         address = {Hasselt},
       publisher = {W. Klock},
            year = {1890},
             url = {http://www.just-his.be/eprints/6519/}
}