@article{10_14708_dm_v32i0_26,
     author = {Ewa Swoboda and Konstantinos Tatsis},
     title = {Pi\k{e}ciolatki uk{\l}adaj\k{a} szlaczki, burz\k{a} je i rozmawiaj\k{a} o regularno\'sciach},
     journal = {Didactica Mathematicae},
     publisher = {mathdoc},
     volume = {32},
     year = {2009},
     doi = {10.14708/dm.v32i0.26},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/dm.v32i0.26/}
}