TY  - JOUR
AU  - Peter Wintgen
TI  - On the total curvature of surfaces in $E^4$
JO  - Colloquium Mathematicum
PY  - 1978
SP  - 289
EP  - 296
VL  - 39
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-39-2-289-296/
DO  - 10.4064/cm-39-2-289-296
LA  - en
ID  - 10_4064_cm_39_2_289_296
ER  -