@article{10_14708_dm_v28i01_6613,
     author = {Zbigniew Semadeni},
     title = {O zasadzie w{\l}a\'sciwego ukierunkowania (rozwini\k{e}cie my\'sli {Zofii} {Krygowskiej)}},
     journal = {Didactica Mathematicae},
     pages = { 155--184},
     publisher = {mathdoc},
     volume = {28},
     number = {01},
     year = {2005},
     doi = {10.14708/dm.v28i01.6613},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v28i01.6613/}
}