@article{DAN_1968_178_5_a5,
     author = {L. A. Lyusternik},
     title = {Certain systems of symmetric functions},
     journal = {Doklady Akademii Nauk},
     pages = {1010--1012},
     year = {1968},
     volume = {178},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_178_5_a5/}
}