@article{AUPCDM_2009_2_1_a7,
     author = {Kucio, Magdalena and Ratusi\'nski, Tadeusz},
     title = {Idea czynno\'sciowego wprowadzania poj\k{e}\'c geometrii elementarnej z pomoc\k{a} kursu e-learningowego},
     journal = {Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia},
     pages = {105--118},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {2009},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/AUPCDM_2009_2_1_a7/}
}