@article{10_14708_cm_v2i2_5419,
     author = {Z. Ciesielski},
     title = {O pewnych nier\'owno\'sciach},
     journal = {Commentationes Mathematicae},
     pages = { 361--367},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1956},
     doi = {10.14708/cm.v2i2.5419},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v2i2.5419/}
}