@article{TM_2012_279_a11,
     author = {A. G. Sergeev},
     title = {Magnetic {Bloch} theory and noncommutative geometry},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {193--205},
     year = {2012},
     volume = {279},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2012_279_a11/}
}