TY  - JOUR
AU  - S. E. Karapetyan
TI  - Topology of asymptotic lines on closed linear surfaces
JO  - Doklady Akademii Nauk
PY  - 1973
SP  - 283
EP  - 286
VL  - 209
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1973_209_2_a5/
LA  - ru
ID  - DAN_1973_209_2_a5
ER  -