@article{MAPO_2017_4_1_a9,
     author = {Czerwi\'nski, Wojciech},
     title = {Co z t\k{a} matematyk\k{a}?},
     journal = {Matematyka Pogl\k{a}dowa},
     pages = {40--43},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {2017},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/MAPO_2017_4_1_a9/}
}