TY  - JOUR
AU  - Wolfgang Kühnel
TI  - 0-tight surfaces with boundary and the total curvature of curves in surfaces
JO  - Colloquium Mathematicum
PY  - 1981
SP  - 251
EP  - 256
VL  - 45
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-45-2-251-256/
DO  - 10.4064/cm-45-2-251-256
LA  - en
ID  - 10_4064_cm_45_2_251_256
ER  -