@article{PMIHES_1969__36__127_0,
     author = {Hironaka, Heisuke},
     title = {Normal cones in analytic {Whitney} stratifications},
     journal = {Publications Math\'ematiques de l'IH\'ES},
     pages = {127--138},
     publisher = {Institut des Hautes \'Etudes Scientifiques},
     volume = {36},
     year = {1969},
     mrnumber = {277759},
     zbl = {0219.57022},
     language = {en},
     url = {http://www.numdam.org/item/PMIHES_1969__36__127_0/}
}