Yankel Fijalkow, a university professor and researcher at CRH–LAVUE (Centre de recherche sur l’habitat – Laboratoire architecture, ville, urbanisme, environnement; UMR 7218, CNRS), teaches at the École Nationale Supérieure d’Architecture de Paris–Val de Seine and conducts research at various levels on the evolution of urban policy paradigms. He is the author of Sociologie des villes (Paris : La Découverte, 2007, 3rd edition).