TY  - JOUR
AU  - A. M. Dulliev
TI  - Two Structures Based on Convexities on the 2-Sphere
JO  - Matematičeskie zametki
PY  - 2017
SP  - 186
EP  - 196
VL  - 102
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2017_102_2_a2/
LA  - ru
ID  - MZM_2017_102_2_a2
ER  -