@book{justhis156,
           title = {Polices secr{\`e}tes et secrets de la police {\`a} Bruxelles au XIXe si{\`e}cle},
          author = {Luc Keunings},
         address = {Bruxelles},
       publisher = {Archives de la ville de Bruxelles},
            year = {2007},
        keywords = {"Suret{\'e} de l'Etat" "State security" "staatsveiligheid" "police secr{\`e}te" "geheime politie" "secret police" espion spy spion "surveillance politique" "political oversight" "politiek toezicht" "police secr{\`e}te" "geheime politie" "secret police"

Bruxelles Brussel},
             url = {http://www.just-his.be/eprints/156/}
}