TY  - JOUR
AU  - W. Szlenk
TI  - On non-smoothly equivalent diffeomorphisms of the circle
JO  - Colloquium Mathematicum
PY  - 1974
SP  - 257
EP  - 259
VL  - 32
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-32-2-257-259/
DO  - 10.4064/cm-32-2-257-259
LA  - en
ID  - 10_4064_cm_32_2_257_259
ER  -