TY  - JOUR
AU  - Frank D. Farmer
TI  - Characteristic for reflexive relations.
JO  - Aequationes mathematicae
PY  - 1977
SP  - 195
EP  - 200
VL  - 15
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1977__15_136650/
ID  - AM2_1977__15_136650
ER  -