TY  - JOUR
AU  - Maria Legutko
TI  - CIEAEM 51
JO  - Didactica Mathematicae
PY  - 2001
SP  -  165
EP  - 171
VL  - 23
IS  - 01
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/dm.v23i01.6715/
DO  - 10.14708/dm.v23i01.6715
LA  - pl
ID  - 10_14708_dm_v23i01_6715
ER  -