TY - JOUR AU - Zh. Ling TI - Asymptotic behaviour of solutions of linear differential equations when perturbation of boundary combined with perturbation of operator JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1964 VL - 19 IS - 5 UR - http://geodesic.mathdoc.fr/item/RM_1964_19_5_a21/ LA - ru ID - RM_1964_19_5_a21 ER -