TY  - JOUR
AU  - Greg Friedman
TI  - Some non-trivial PL knots whose
 complements are homotopy circles
JO  - Fundamenta Mathematicae
PY  - 2007
SP  - 1
EP  - 6
VL  - 193
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm193-1-1/
DO  - 10.4064/fm193-1-1
LA  - en
ID  - 10_4064_fm193_1_1
ER  -