TY  - JOUR
AU  - Marianna Ciosek
AU  - Maciej Klakla
TI  - CIEAEM 53
JO  - Didactica Mathematicae
PY  - 2001
SP  -  172
EP  - 183
VL  - 23
IS  - 01
UR  - http://geodesic.mathdoc.fr/articles/10.14708/dm.v23i01.6716/
DO  - 10.14708/dm.v23i01.6716
LA  - pl
ID  - 10_14708_dm_v23i01_6716
ER  -