TY  - JOUR
AU  - S. I. Savel'ev
TI  - On surfaces with planar generators along which the tangent plane is constant
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 1960
SP  - 154
EP  - 167
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_1960_2_a17/
LA  - ru
ID  - IVM_1960_2_a17
ER  -