@article{DAN_1982_263_6_a6,
     author = {S. P. Novikov},
     title = {Commuting operators of rank $l>1$ with periodic coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {1311--1314},
     publisher = {mathdoc},
     volume = {263},
     number = {6},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_263_6_a6/}
}