TY  - JOUR
AU  - H. Ts. Hakopyan
TI  - About convexity of polygons
JO  - Proceedings of the Yerevan State University. Physical and mathematical sciences
PY  - 2007
SP  - 20
EP  - 24
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/UZERU_2007_3_a2/
LA  - ru
ID  - UZERU_2007_3_a2
ER  -