@book{justhis1216,
           title = {Voyage en Belgique, et conf{\'e}rences sur les divers syst{\`e}mes d'emprisonnement},
          author = {Benjamin Appert},
         address = {Bruxelles},
       publisher = {A. Garcin \& A. Beelaerts},
            year = {1848},
        keywords = {prison	penitentiary jail	gevangenis
enfermement	confinement	opsluiting
},
             url = {http://www.just-his.be/eprints/1216/}
}