@article{MAPO_2017_4_1_a3,
     author = {Ska{\l}ba, Mariusz},
     title = {Kto si\k{e} boi bardziej, czyli wsp\'o{\l}czynnik {Arrowa-Pratta}},
     journal = {Matematyka Pogl\k{a}dowa},
     pages = {7--10},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {2017},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/MAPO_2017_4_1_a3/}
}