TY  - JOUR
AU  - A. V. Karzanov
TI  - Closed sets of a directed graph
JO  - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki
PY  - 1984
SP  - 1903
EP  - 1906
VL  - 24
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZVMMF_1984_24_12_a14/
LA  - ru
ID  - ZVMMF_1984_24_12_a14
ER  -