TY  - JOUR
AU  - A. Spakowski
TI  - On approximation by step multifunctions
JO  - Commentationes Mathematicae
PY  - 1985
SP  -  363
EP  - 371
VL  - 25
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v25i2.6141/
DO  - 10.14708/cm.v25i2.6141
LA  - pl
ID  - 10_14708_cm_v25i2_6141
ER  -