TY  - JOUR
AU  - Skula, Ladislav
TI  - System of layers of an ordered set
JO  - Czechoslovak Mathematical Journal
PY  - 1969
SP  - 27
EP  - 41
VL  - 19
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1969.100873/
DO  - 10.21136/CMJ.1969.100873
LA  - en
ID  - 10_21136_CMJ_1969_100873
ER  -