@article{10_14708_dm_v30i0_11,
     author = {Agnieszka Herma},
     title = {XX, {XXI} {Szko{\l}a} {Dydaktyki} {Matematyki}},
     journal = {Didactica Mathematicae},
     publisher = {mathdoc},
     volume = {30},
     year = {2007},
     doi = {10.14708/dm.v30i0.11},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v30i0.11/}
}