@article{AA_1997_9_1_a1,
     author = {M. Sh. Birman and T. A. Suslina},
     title = {The two-dimensional periodic magnetic {Hamiltonian} is absolutely continuous},
     journal = {Algebra i analiz},
     pages = {32--48},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1997_9_1_a1/}
}