TY - JOUR AU - M. A. Naimark TI - Investigation of the spectrum and the expansion in eigenfunctions of a nonselfadjoint operator of the second order on a semi-axis JO - Trudy Moskovskogo matematičeskogo obŝestva PY - 1954 SP - 181 EP - 270 VL - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MMO_1954_3_a3/ LA - ru ID - MMO_1954_3_a3 ER -