@article{10_14708_dm_v37i0_841,
     author = {El\.zbieta Mro\.zek},
     title = {Wprowadzenie w por\'ownywanie r\'o\.znicowe {\textendash} podej\'scie tradycyjne a podej\'scie konstruktywistyczne},
     journal = {Didactica Mathematicae},
     publisher = {mathdoc},
     volume = {37},
     year = {2015},
     doi = {10.14708/dm.v37i0.841},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v37i0.841/}
}