@article{10_14708_dm_v4i01_6960,
     author = {Anna Sierpi\'nska},
     title = {O niekt\'orych trudno\'sciach w uczeniu si\k{e} poj\k{e}cia granicy - na podstawie studium przypadku},
     journal = {Didactica Mathematicae},
     pages = { 107--167},
     publisher = {mathdoc},
     volume = {4},
     number = {01},
     year = {1985},
     doi = {10.14708/dm.v4i01.6960},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v4i01.6960/}
}