@article{AUPCG_2011_2_1_a12,
     author = {Wilczy\'nski, Piotr L.},
     title = {Geograficzny bieg dziej\'ow},
     journal = {Annales Universitatis Paedagogicae Cracoviensis. Studia Geographica},
     pages = {65--77},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {2011},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/AUPCG_2011_2_1_a12/}
}