@article{DAN_1995_341_4_a1,
     author = {V. A. Dobrynskii},
     title = {Critical sets and unimodal mappings of a square},
     journal = {Doklady Akademii Nauk},
     pages = {442--445},
     publisher = {mathdoc},
     volume = {341},
     number = {4},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1995_341_4_a1/}
}