TY  - JOUR
AU  - Pechanec-Drahoš, Jaroslav
TI  - A construction of the projective modification for a closure-set of a presheaf
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1971
SP  - 117
EP  - 125
VL  - 12
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_1971__12_1_a12/
LA  - en
ID  - CMUC_1971__12_1_a12
ER  -