@article{DAN_1966_171_1_a6,
     author = {T. S. Zverkina},
     title = {A new class of finite difference operators},
     journal = {Doklady Akademii Nauk},
     pages = {33--36},
     publisher = {mathdoc},
     volume = {171},
     number = {1},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_171_1_a6/}
}