TY  - JOUR
AU  - A. V. Kostin
TI  - Asymptotic lines on the pseudo-spherical surfaces
JO  - Vladikavkazskij matematičeskij žurnal
PY  - 2019
SP  - 16
EP  - 26
VL  - 21
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VMJ_2019_21_1_a1/
LA  - ru
ID  - VMJ_2019_21_1_a1
ER  -