TY  - JOUR
AU  - Schwarz, Štefan
TI  - On idempotent binary relations on a finite set
JO  - Czechoslovak Mathematical Journal
PY  - 1970
SP  - 696
EP  - 702
VL  - 20
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1970.100991/
DO  - 10.21136/CMJ.1970.100991
LA  - en
ID  - 10_21136_CMJ_1970_100991
ER  -