@article{10_14708_wm_v47i2_135,
     author = {Ragni Piene},
     title = {Matematyka jest wszechobecna},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 221--223},
     publisher = {mathdoc},
     volume = {47},
     number = {2},
     year = {2011},
     doi = {10.14708/wm.v47i2.135},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v47i2.135/}
}