@article{10_14708_dm_v13i01_6829,
     author = {Alan Bell},
     title = {Systematyczne u\.zycie konfliktu poznawczego w nauczaniu {\textemdash} trzy eksperymenty},
     journal = {Didactica Mathematicae},
     pages = { 9--55},
     publisher = {mathdoc},
     volume = {13},
     number = {01},
     year = {1992},
     doi = {10.14708/dm.v13i01.6829},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v13i01.6829/}
}