@article{SM_1998_189_5_a7,
     author = {V. V. Chistyakov},
     title = {On the theory of set-valued maps of bounded variation of one real variable},
     journal = {Sbornik. Mathematics},
     pages = {797--819},
     year = {1998},
     volume = {189},
     number = {5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1998_189_5_a7/}
}