TY  - JOUR
AU  - J. Czajsner
TI  - Some equivalence relations in relational systems
JO  - Commentationes Mathematicae
PY  - 1969
SP  -  81
EP  - 89
VL  - 13
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v13i1.5660/
DO  - 10.14708/cm.v13i1.5660
LA  - pl
ID  - 10_14708_cm_v13i1_5660
ER  -