TY  - JOUR
AU  - Niederle, Josef
TI  - Natural generalization of some lattice theory concepts to partially ordered sets
JO  - Czechoslovak Mathematical Journal
PY  - 1991
SP  - 297
EP  - 299
VL  - 41
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1991.102463/
DO  - 10.21136/CMJ.1991.102463
LA  - en
ID  - 10_21136_CMJ_1991_102463
ER  -