@article{RM_1973_28_3_a20,
     author = {E. V. Pankratiev},
     title = {Fuchsian difference modules},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1973},
     volume = {28},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1973_28_3_a20/}
}