@article{RM_2009_64_6_a5,
     author = {A. N. Gorbachev and A. M. Stepin},
     title = {Invariant measures for set-valued maps},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1136--1138},
     publisher = {mathdoc},
     volume = {64},
     number = {6},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2009_64_6_a5/}
}