%0 Journal Article %A N. E. Firsova %T Rieman surface of quasiimpulse and the theory of scattering for disturbed Hill operator %J Zapiski Nauchnykh Seminarov POMI %D 1975 %P 183-196 %V 51 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1975_51_a13/ %G ru %F ZNSL_1975_51_a13