@article{PMIHES_1988__68__13_0,
     author = {Haefliger, Andr\'e},
     title = {Un aper\c{c}u de l'{\oe}uvre de {Thom} en topologie diff\'erentielle (jusqu'en 1957)},
     journal = {Publications Math\'ematiques de l'IH\'ES},
     pages = {13--18},
     publisher = {Institut des Hautes \'Etudes Scientifiques},
     volume = {68},
     year = {1988},
     mrnumber = {1001444},
     zbl = {0682.57001},
     language = {fr},
     url = {http://www.numdam.org/item/PMIHES_1988__68__13_0/}
}