@article{10_14708_dm_v24i01_6677,
     author = {Zbigniew Semadeni},
     title = {Trojaka natura matematyki: idee g{\l}\k{e}bokie, formy powierzchniowe, modele formalne},
     journal = {Didactica Mathematicae},
     pages = { 41--92},
     publisher = {mathdoc},
     volume = {24},
     number = {01},
     year = {2002},
     doi = {10.14708/dm.v24i01.6677},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v24i01.6677/}
}