@article{10_14708_dm_v25i01_6658,
     author = {. Redakcja},
     title = {CIEAEM 55},
     journal = {Didactica Mathematicae},
     pages = { 230},
     publisher = {mathdoc},
     volume = {25},
     number = {01},
     year = {2003},
     doi = {10.14708/dm.v25i01.6658},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v25i01.6658/}
}