TY  - JOUR
AU  - Duda, Jaromír
TI  - Conditions for factorable relations
JO  - Czechoslovak Mathematical Journal
PY  - 1991
SP  - 131
EP  - 134
VL  - 41
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1991.102442/
DO  - 10.21136/CMJ.1991.102442
LA  - en
ID  - 10_21136_CMJ_1991_102442
ER  -