TY  - JOUR
AU  - Phan Đìni Diêu
TI  - On closed and open sets in constructive topological spaces
JO  - Informatics and Automation
PY  - 1967
SP  - 250
EP  - 256
VL  - 93
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1967_93_a12/
LA  - ru
ID  - TRSPY_1967_93_a12
ER  -