TY  - JOUR
AU  - Sapák, Oldřich
TI  - Representation of the finite directed acyclic graph
JO  - Archivum mathematicum
PY  - 1977
SP  - 111
EP  - 116
VL  - 13
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ARM_1977__13_2_a6/
LA  - en
ID  - ARM_1977__13_2_a6
ER  -