TY  - JOUR
AU  - Andrzej Pokrzywa
TI  - Spectra of approximating operators
JO  - Mathematica Applicanda
PY  - 1995
SP  -  87
EP  - 100
VL  - 24
IS  - 38
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/ma.v24i38.1836/
DO  - 10.14708/ma.v24i38.1836
LA  - pl
ID  - 10_14708_ma_v24i38_1836
ER  -