TY  - JOUR
AU  - A. N. Zubkov
AU  - V. T. Fomenko
TI  - Transformations of $R$-surfaces of Euclidean space preserving their Grassman image
JO  - Matematičeskie zametki
PY  - 1989
SP  - 20
EP  - 27
VL  - 45
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1989_45_1_a3/
LA  - ru
ID  - MZM_1989_45_1_a3
ER  -