@article{10_14708_dm_v3i01_6999,
     author = {. Redakcja},
     title = {Przedmowa},
     journal = {Didactica Mathematicae},
     pages = { 5--6},
     publisher = {mathdoc},
     volume = {3},
     number = {01},
     year = {1984},
     doi = {10.14708/dm.v3i01.6999},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v3i01.6999/}
}