@article{IM2_2008_72_4_a1,
     author = {M. S. Bichegkuev},
     title = {Conditions for solubility of difference inclusions},
     journal = {Izvestiya. Mathematics },
     pages = {647--658},
     publisher = {mathdoc},
     volume = {72},
     number = {4},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2008_72_4_a1/}
}