%0 Journal Article %A A. A. Fedotov %T Complex WKB method for adiabatic perturbations of a~periodic Schr\"odinger operator %J Zapiski Nauchnykh Seminarov POMI %D 2010 %P 142-178 %V 379 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2010_379_a6/ %G ru %F ZNSL_2010_379_a6