TY  - JOUR
AU  - Josef Šlapal
TI  - A closure operator for the digital plane
JO  - Filomat
PY  - 2020
SP  - 3229 
VL  - 34
IS  - 10
UR  - http://geodesic.mathdoc.fr/articles/10.2298/FIL2010229S/
DO  - 10.2298/FIL2010229S
LA  - en
ID  - 10_2298_FIL2010229S
ER  -