@article{MAN_1976__222_162863,
     author = {Jonathan Simon},
     title = {Roots and {Centralizers} of {Peripheral} {Elements} in {Knot} {Groups.}},
     journal = {Mathematische Annalen},
     pages = {205--210},
     publisher = {mathdoc},
     volume = {222},
     year = {1976},
     zbl = {0314.55003},
     url = {http://geodesic.mathdoc.fr/item/MAN_1976__222_162863/}
}