TY  - JOUR
AU  - Jane Day
TI  - Monotone relations which preserve arcs and acyclicity
JO  - Fundamenta Mathematicae
PY  - 1966
SP  - 59
EP  - 65
VL  - 58
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-58-1-59-65/
DO  - 10.4064/fm-58-1-59-65
LA  - en
ID  - 10_4064_fm_58_1_59_65
ER  -