@article{TM_1979_150_a0,
     author = {O. V. Besov and V. P. Il'in},
     title = {Projection representation of functions by a~difference},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {3--10},
     year = {1979},
     volume = {150},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1979_150_a0/}
}