@book{justhis2425,
           title = {Notions sur la constitution belge et les lois politiques et administratives},
          author = {V. Vignol},
         address = {Li{\`e}ge},
       publisher = {Dessain},
            year = {1906},
        keywords = {grondwet constitution law wet loi administratif administratief administrative        
},
             url = {http://www.just-his.be/eprints/2425/}
}