@article{MAN_1987__278_164299,
     author = {Walter Neumann and Lee Rudolph},
     title = {Unfoldings in {Knot} {Theory.}},
     journal = {Mathematische Annalen},
     pages = {409--440},
     publisher = {mathdoc},
     volume = {278},
     year = {1987},
     zbl = {0675.57010},
     url = {http://geodesic.mathdoc.fr/item/MAN_1987__278_164299/}
}