TY  - JOUR
AU  - K.A. Jr. Perko
TI  - On Dihedral Covering Spaces of Knots.
JO  - Inventiones mathematicae
PY  - 1976
SP  - 77
EP  - 82
VL  - 34
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1976__34_142388/
ID  - IM_1976__34_142388
ER  -