@article{DE_1989_25_11_a14,
     author = {Yu. B. Suris},
     title = {Irreducibility of the {Schr\"odinger} equation with quasiperiodic potential},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1932--1941},
     year = {1989},
     volume = {25},
     number = {11},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_11_a14/}
}