@article{IIMI_2006_1_a2,
     author = {L. I. Danilov},
     title = {On absolute continuity of the spectrum of three-dimensional periodic {Dirac} operator},
     journal = {Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta},
     pages = {49--76},
     year = {2006},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIMI_2006_1_a2/}
}