?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Beck%2C+Philippe&rft.aulast=Beck&rft.aufirst=Philippe&rft.volume=21&rft.date=September+2009&rft.atitle=Agents+secrets+%C3%A0+la+fronti%C3%A8re+belgo-allemande.+Des+services+de+renseignements+belges%2C+alli%C3%A9s+et+allemands+entre+1920+et+1940+dans+la+r%C3%A9gion+d%E2%80%99Eupen+&rft.title=Cahiers+d'histoire+du+Temps+Pr%C3%A9sent%2F+Cahiers+d%E2%80%99histoire+du+Temps+Pr%C3%A9sent%2F+Bijdragen+tot+de+Eigentijdse+Geschiedenis&rft.pages=93-134&rft.genre=article