@article{MAPO_2017_4_1_a10,
     author = {Kordos, Marek},
     title = {Przed p\'o{\l} wiekiem},
     journal = {Matematyka Pogl\k{a}dowa},
     pages = {44},
     year = {2017},
     volume = {4},
     number = {1},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/MAPO_2017_4_1_a10/}
}