TY  - JOUR
AU  - Ljubisa D.R. Kocinac
TI  - ?-Sets, Yk-Sets and Hyperspaces
JO  - Mathematica balkanica
PY  - 2005
SP  - 109
VL  - 19
IS  - 1-2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MABA_2005_19_1-2_a11/
ID  - MABA_2005_19_1-2_a11
ER  -