TY - JOUR AU - B. S. Pavlov TI - Scattering theory and the ``nonphysical sheet'' for a system of ordinary differential equations JO - Doklady Akademii Nauk PY - 1970 SP - 36 EP - 39 VL - 193 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1970_193_1_a7/ LA - ru ID - DAN_1970_193_1_a7 ER -