@book{justhis5769,
           title = {L'action alimentaire des enfants naturels. Commentaire de la loi du 6 avril 1908},
          author = {Ludovic Ulrix},
         address = {Bruxelles},
       publisher = {Bruylant},
            year = {1930},
             url = {http://www.just-his.be/eprints/5769/}
}