TY - JOUR AU - A. R. Its TI - Liouville's theorem and the inverse scattering method JO - Zapiski Nauchnykh Seminarov POMI PY - 1984 SP - 113 EP - 125 VL - 133 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1984_133_a7/ LA - ru ID - ZNSL_1984_133_a7 ER -