%0 Journal Article %A I. Kachkovskii %A N. Filonov %T Absolute continuity of the spectrum of the periodic Scrödinger operator in a layer and in a smooth cylinder %J Zapiski Nauchnykh Seminarov POMI %D 2010 %P 69-82 %V 385 %U http://geodesic.mathdoc.fr/item/ZNSL_2010_385_a3/ %G ru %F ZNSL_2010_385_a3