TY  - JOUR
AU  - Nitima Phrommarat
AU  - Sivaree Sudsanit
TI  - On a product of universal relational systems
JO  - Novi Sad Journal of Mathematics
PY  - 2020
SP  - 61 
EP  -  71
VL  - 50
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.30755/NSJOM.09812/
DO  - 10.30755/NSJOM.09812
ID  - 10.30755/NSJOM.09812
ER  -