@article{10_14708_cm_v23i1_6040,
     author = {W. Orlicz and R. Urba\'nski},
     title = {Total variation of a set-valued measure},
     journal = {Commentationes Mathematicae},
     pages = { 85--89},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {1983},
     doi = {10.14708/cm.v23i1.6040},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v23i1.6040/}
}