TY  - JOUR
AU  - J. Kopeć
TI  - Some criterions of Nӧrlund summability
JO  - Commentationes Mathematicae
PY  - 1969
SP  -  67
EP  - 75
VL  - 13
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v13i1.5658/
DO  - 10.14708/cm.v13i1.5658
LA  - pl
ID  - 10_14708_cm_v13i1_5658
ER  -