@article{AUPCDM_2006_1_1_a9,
     author = {Major, Joanna and Pow\k{a}zka, Zbigniew},
     title = {Uwagi dotycz\k{a}ce poj\k{e}cia warto\'sci bezwzgl\k{e}dnej liczby rzeczywistej},
     journal = {Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia},
     pages = {163--185},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {2006},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/AUPCDM_2006_1_1_a9/}
}