TY  - JOUR
AU  - Rolewicz, Stefan
TI  - On σ-porous and Φ-angle-small sets in metric spaces
JO  - Control and Cybernetics
PY  - 2003
SP  - 671
EP  - 681
VL  - 32
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CC_2003_32_3_a13/
LA  - en
ID  - CC_2003_32_3_a13
ER  -