@article{PMIHES_1998__88__151_0,
     author = {A'Campo, Norbert},
     title = {Generic immersions of curves, knots, monodry and {Gordian} number},
     journal = {Publications Math\'ematiques de l'IH\'ES},
     pages = {151--169},
     publisher = {Institut des Hautes \'Etudes Scientifiques},
     volume = {88},
     year = {1998},
     mrnumber = {2001b:57009},
     zbl = {0960.57007},
     language = {en},
     url = {http://www.numdam.org/item/PMIHES_1998__88__151_0/}
}