@article{DAN_1991_319_4_a7,
     author = {G. Dzhangibekov},
     title = {Noethericity conditions and the index of some two-dimensional},
     journal = {Doklady Akademii Nauk},
     pages = {811--815},
     year = {1991},
     volume = {319},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_319_4_a7/}
}