TY  - JOUR
AU  - N. G. Perlova
TI  - Infinitesimal first- and second-order deformations of ribbed surfaces of revolution, preserving the normal curvature or geodesic torsion of the boundary parallel
JO  - Matematičeskie zametki
PY  - 1971
SP  - 135
EP  - 144
VL  - 10
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1971_10_2_a2/
LA  - ru
ID  - MZM_1971_10_2_a2
ER  -