@article{PMIHES_1971__40__117_0,
     author = {Godwin, A. N.},
     title = {Three dimensional pictures for {Thom's} parabolic umbilic},
     journal = {Publications Math\'ematiques de l'IH\'ES},
     pages = {117--138},
     publisher = {Institut des Hautes \'Etudes Scientifiques},
     volume = {40},
     year = {1971},
     mrnumber = {407885},
     zbl = {0229.58006},
     language = {en},
     url = {http://www.numdam.org/item/PMIHES_1971__40__117_0/}
}