TY  - JOUR
AU  - Włodzimierz Łenski
AU  - Bogdan Szal
TI  - Pointwise strong and very strong approximation by matrix means of Fourier series
JO  - Commentationes Mathematicae
PY  - 2008
SP  -  177
EP  - 198
VL  - 48
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v48i2.5271/
DO  - 10.14708/cm.v48i2.5271
LA  - pl
ID  - 10_14708_cm_v48i2_5271
ER  -