TY  - JOUR
AU  - J. Popenda
TI  - Finite difference inequalities
JO  - Commentationes Mathematicae
PY  - 1986
SP  -  89
EP  - 96
VL  - 26
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v26i1.6155/
DO  - 10.14708/cm.v26i1.6155
LA  - pl
ID  - 10_14708_cm_v26i1_6155
ER  -