@article{DAN_1980_253_6_a1,
     author = {B. A. Dubrovin and S. P. Novikov},
     title = {Ground states in a periodic field. {Magnetic} {Bloch} functions and vector bundles},
     journal = {Doklady Akademii Nauk},
     pages = {1293--1297},
     publisher = {mathdoc},
     volume = {253},
     number = {6},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_253_6_a1/}
}