TY  - JOUR
AU  - P. P. Bondarenko
TI  - On the upper bound for the number of additional edges in minimal vertex extensions of colored circles
JO  - Prikladnaya Diskretnaya Matematika. Supplement
PY  - 2013
SP  - 73
EP  - 75
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PDMA_2013_6_a33/
LA  - ru
ID  - PDMA_2013_6_a33
ER  -