@article{10_4064_sm153_3_2,
     author = {V. V. Chistyakov and A. Rychlewicz},
     title = {On the extension and generation of
 set-valued mappings of bounded variation},
     journal = {Studia Mathematica},
     pages = {235--247},
     year = {2002},
     volume = {153},
     number = {3},
     doi = {10.4064/sm153-3-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm153-3-2/}
}