TY - JOUR AU - N. E. Firsova TI - Rieman surface of quasiimpulse and the theory of scattering for disturbed Hill operator JO - Zapiski Nauchnykh Seminarov POMI PY - 1975 SP - 183 EP - 196 VL - 51 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1975_51_a13/ LA - ru ID - ZNSL_1975_51_a13 ER -