TY  - JOUR
AU  - I. Kh. Sabitov
TI  - On the Extrinsic Curvature and the Extrinsic Structure of Normal Developable $C^1$ Surfaces
JO  - Matematičeskie zametki
PY  - 2010
SP  - 900
EP  - 906
VL  - 87
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2010_87_6_a10/
LA  - ru
ID  - MZM_2010_87_6_a10
ER  -