@article{PMF_1915_26_1_a4,
     author = {Mazurkiewicz, Stefan},
     title = {O punktach wielokrotnych krzywych wype{\l}niaj\k{a}cych obszar p{\l}aski},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {113--120},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {1915},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1915_26_1_a4/}
}