@article{MZM_2000_67_6_a2,
     author = {A. G. Baskakov},
     title = {Invertibility and the {Fredholm} property of difference operators},
     journal = {Matemati\v{c}eskie zametki},
     pages = {816--827},
     publisher = {mathdoc},
     volume = {67},
     number = {6},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2000_67_6_a2/}
}