TY  - JOUR
AU  - S. B. Kadomtsev
TI  - A study of certain properties of normal torsion of a two-dimensional surface in four-dimensional space
JO  - Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara
PY  - 1975
SP  - 267
EP  - 278
VL  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/INTG_1975_7_a15/
LA  - ru
ID  - INTG_1975_7_a15
ER  -